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The Three Hearts Equation (College Boys of New Haven Book 2) Kindle Edition
If love makes sense to you, you’re doing it wrong.
Mason
I loved Leo from the moment I met him. But life gets busy when you grow up. Leo took good care of me, and now he needs someone to take care of him. I must step up and be that person. Except I can’t do it alone.
Leo
I could carry everyone’s worries on my shoulders but mine. In just a few days, my dad ruined our family and the only person I can lean on is Mason. He worries and cares and I love him endlessly, but our lives are messy with no signs of improvement. Can we endure this on our own or is the solution to all our problems right under my nose?
Quinn
I never meant to fall in love. That’s just not what I do. But Mason and Leo could use some help and who better to help them but their best friend? The more I’m with them, the more I realize I’m going down a dangerous road. Of millions of possible outcomes, all are bad but one. Do we even stand a chance?
The Three Hearts Equation is the second book in the College Boys of New Haven series. It can be read as a standalone, but it’s more fun if you’ve read The Nerd Jock Conundrum and the free prequel novella. This is a sweet and steamy MMM romance featuring two nerds and a jock with a guaranteed HEA.
- LanguageEnglish
- Publication dateMay 7, 2021
- File size8.0 MB
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This option includes 5 books.
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From the Publisher


Editorial Reviews
About the Author
Product details
- ASIN : B093Z4JB2B
- Publisher : Self-published (May 7, 2021)
- Publication date : May 7, 2021
- Language : English
- File size : 8.0 MB
- Text-to-Speech : Enabled
- Screen Reader : Supported
- Enhanced typesetting : Enabled
- X-Ray : Not Enabled
- Word Wise : Enabled
- Print length : 259 pages
- Best Sellers Rank: #296,018 in Kindle Store (See Top 100 in Kindle Store)
- #1,919 in Gay & Lesbian (Kindle Store)
- #3,802 in Gay Fiction
- #6,643 in New Adult & College Romance (Kindle Store)
- Customer Reviews:
About the author

Gay. Sweet. Steamy.
Hayden Hall writes MM romance novels. He is a boyfriend, a globetrotter, and an avid romance reader.
Hayden's mission is to author a catalog of captivating and steamy MM romance novels which gather a devoted community around the Happily Ever Afters.
His stories are sweet with just the right amount of naughty.
You can get in touch with Hayden on Facebook or through his website at https://haydenhallwrites.com
Customer reviews
Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers say
Customers enjoy this book's romance, with one noting it's not overwhelmed by angst. The characters are well-developed, and customers find the writing style engaging, with one highlighting the heart in Hayden's writing. Customers describe the book as cute, sweet, and fun, with one comparing it to spun sugar.
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Customers enjoy the romance and love in this book, with one customer noting it's a classic take on friends to lovers.
"...I enjoyed the romance - I always like friends to lovers because of the communication needed as they realize the relationship is changing...." Read more
"...The story is sexy and full of love and romance without being either too shy/timid or too focused on the “activities”!..." Read more
"...Boy, was I not ready. I enjoy his style and storytelling...." Read more
"Loved the ending of this series. It was fun, with a little sexy and troubles that were worked out with the caring and compassion of each character...." Read more
Customers find the book enjoyable and wonderful, with one describing it as a heartwarming read.
"While I enjoyed reading this book, I must say that I felt like the storyline diminished the original couple’s relationship...." Read more
"...I like that this continued with characters from book one. It was a good read. These three were meant to be." Read more
"Thruples aren't always my cup of tea. But the way this one was told was really good. All 3 of them truly seemed to love each other by the end...." Read more
"...written, well thought out, smooth flowing chain of events and thoroughly enjoyable. This author will go far and develop a loyal fan base." Read more
Customers appreciate the character development in the book, with one customer noting how each character is meticulously painted.
"...The characters are well-developed, and somehow the friendships seem more true or real here...." Read more
"...sexy and troubles that were worked out with the caring and compassion of each character...." Read more
"Mason, Quinn, and Leo I like that this continued with characters from book one. It was a good read. These three were meant to be." Read more
"...to expect As this was my 1st Gay romance, But it was a beautiful story With characters That you had to fall in love with And empathize with...." Read more
Customers like the style of the book, finding it cute, with one customer noting it's not fancy.
"...Boy, was I not ready. I enjoy his style and storytelling...." Read more
"...The story was natural and believable. Nothings fancy, just three guys in love. Very heartwarming read...." Read more
"As expected, the author delivers on cute and sweet once again. The story is never complicated, but with lovable characters and plenty of romance...." Read more
"Cute, sweet and full of love ☺️..." Read more
Customers find the book fun, with one mentioning how Quinn incorporates more playful elements throughout the story.
"Loved the ending of this series. It was fun, with a little sexy and troubles that were worked out with the caring and compassion of each character...." Read more
"...Leo, Mason, and Quinn are playful, sweet, and so hot together. It was nice seeing characters return from the first book in the series." Read more
"I loved this revisiting of Mason and Leo, with Quinn incorporated for more fun, sarcasm, and sexy times...." Read more
"Freakin' Quinn!..." Read more
Customers find the book sweet, with one describing it as "sweet as spun sugar."
"...Leo, Mason, and Quinn are playful, sweet, and so hot together. It was nice seeing characters return from the first book in the series." Read more
"...is an almost classic take on friends to lovers and it as as sweet as spun sugar with enough substance to make it fulfilling." Read more
"Cute, sweet and full of love ☺️..." Read more
"Cute and sweet..." Read more
Customers appreciate the writing style of the book, with one customer noting its well-thought-out structure and verdant dialogue.
"...Well written, well thought out, smooth flowing chain of events and thoroughly enjoyable. This author will go far and develop a loyal fan base." Read more
"...Each character is meticulously painted. The dialogue is verdant and real." Read more
"...many MMM I have been a fan of, but Hayden has something unique about his writing style that brings you in. You will not want to miss this one!" Read more
Top reviews from the United States
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- Reviewed in the United States on March 31, 2025You would think that after being in a relationship for years, things get settled. You are with the love of your life, and life can't be better, except...it can.
Mason & Leo had their fair share of problems to get to the point they are now, but they were happy. They had each other, and that was what mattered the most.
Quinn was living his best life, partying, hooking up, school, and friends. What can he want more when he was a commitmentphobe through and through?
Mason, Leo, and Quinn were friends, the best of them, but somehow nothing happened until one day everything changed. I don't think it took them so long because nothing was there, quite the opposite, but I think it didn't because it wasn't the right time.
I think the tension between them grew, and grew, and grew until they couldn't ignore it any longer. I also think Mason & Leo were just waiting for Quinn to be ready for them. They stood by his side while he lived his best life, enjoying his youth. They cheered for him, held him together, and when the time was right, they took the chance.
I loved how soft their love is. How patient. I loved how M&L gave Quinn all the time and space in the world to become the best version of himself before taking the huge step of committing, not only with one, but with two people. They got his back, and Q had theirs. It progressed naturally, and it was very careful with Q's heart, which was fragile... and that made me love them even more.
Looking at these 3 together, I think it was only natural for them to gravitate towards each other. Love is too powerful to let things get in the way.
Ahhh, I love them. I just wish the book was a bit longer, ngl...
4.75✨️ - I really, really recommend this book if an MMM, best friends to lovers ( established couple ) is what you are looking for.
- Reviewed in the United States on May 9, 2021Leo, Mason, Quinn
This is a college/new graduate romance with apartment mates/friends to lovers between an established couple (Mason & Leo) and Quinn, their apartment mate and Mason's best friend. It's set in college, with Mason and Quinn in their final year and Leo just graduated, but the setting is more of a reason for the three MCs to be sharing an apartment. It might work as a standalone, though that means little backstory on Mason and Leo's relationship or Mason and Quinn's friendship or their other roommates.
I enjoyed the romance - I always like friends to lovers because of the communication needed as they realize the relationship is changing. I appreciated that the epilogue is set a year later in order to see them living their HEA, which I know is a personal preference.
It's low on angst, and the bleak moments are fairly short-lived. I recommend it to fans of triads.
- Reviewed in the United States on March 23, 2023This is the second book I have read by Hayden Hall, and I enjoyed it perhaps even more the the Nerd/Jock Conundrum. The characters are well-developed, and somehow the friendships seem more true or real here. This story was not overwhelmed by angst like so many in this genre. There were sufficient struggles and fears depicted here for sure, but they fit in with the arc of the storyline, and I liked how the characters worked things out with one another and in their own mind. The story is sexy and full of love and romance without being either too shy/timid or too focused on the “activities”! I would recommend this book to folks who enjoy romance and are comfortable with reading about people who are actively exploring their sexuality. I look forward to reading the rest of Hayden Hall’s works and for sure joined the mailing list!
- Reviewed in the United States on October 14, 2021While I enjoyed reading this book, I must say that I felt like the storyline diminished the original couple’s relationship. More concerning to me was the fact that I found myself having to stop reading and back track a bit to figure out what words or spellings should be in that location. I found it very distracting. Normally, editing does not factor into my enjoyment of a book, but the sheer number of editing fails in this book deteriorated my overall enjoyment.
- Reviewed in the United States on February 14, 2024Welp, when I discovered Hall, I thought these would be fun to read. Boy, was I not ready. I enjoy his style and storytelling. And of the 5 books of his I've read, I started with the Titans in Detroit, this is my favorite.
It's been a long time since an author has taken me on an emotional roller-coaster like that. And chapter 37! I laughed so hard and loud that I think my neighbors hate me now. But I also cried at the sweetness of Mason.
Even if gay romance isn't your thing, he is still an amazing romance writer that I suggest taking a chance on him.
- Reviewed in the United States on June 19, 2021Loved the ending of this series. It was fun, with a little sexy and troubles that were worked out with the caring and compassion of each character. I will miss Mason and Leo, throw Quinn in the mix and this was a triangle that needed to come together to make it move forward with the determination and faith and love of each of them.
- Reviewed in the United States on May 9, 2021This was another fun story in the College Boys of New Haven series. Leo and Mason are still very much in love after two years despite their bedroom issues. Quinn is still their wise cracking friend and roommate. Feelings start to develop past friendship as the three hang out more at home. While each is navigating through their own personal problems, the support they show each other proves to be just what each one needed. Leo, Mason, and Quinn are playful, sweet, and so hot together. It was nice seeing characters return from the first book in the series.
- Reviewed in the United States on July 25, 2023Mason, Quinn, and Leo
I like that this continued with characters from book one. It was a good read. These three were meant to be.
Top reviews from other countries
- Beth MReviewed in Canada on May 9, 2021
5.0 out of 5 stars Worth the read!
These characters find their way into your heart from the beginning. A wonderful perspective on a polyamorous relationship that pulls all the heart strings. Add in some hot scenes and the turmoil that always exists in your college years and a beautiful story is crafted. I say it again, worth the read.
- Kindle CustomerReviewed in the United Kingdom on February 21, 2025
5.0 out of 5 stars Loved it
Loved that Quinn found love albeit as part of a throuple with Mason and Leo and that their lives worked out even if they initially hid stuff from each other but that was to protect them. So glad they found their happy ever after
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Ana SofiaReviewed in Brazil on June 19, 2021
5.0 out of 5 stars Lindo!
Fechamento perfeito pra essa pequena série, Quinn, Mason e Leo são perfeitos juntos e é ótimo encontrar Troy e Jackson do livro anterior ! Muito romântico, envolvente, feliz, como todos os livros do Hayden, é adorável!
- LiashReviewed in Australia on July 12, 2021
4.0 out of 5 stars Great read - recommend reading the prequel first for added backstory
This was a fun and sometimes emotional read. I have read the prequel novella that showed us Mason and Leo meeting and starting their relationship, and I would recommend you read that first before reading this one. While I loved Mason and Leo together, and could see their love and devotion for each other, it was almost a natural progression to add Quinn to their relationship. I loved how well it all just came together, with all 3 of them just worked so well as a triple/throuple - there was no jealousy or forced angst. Yes, they had their personal issues and insecurities to work through, but they did just that - it might have been delayed at times but they were open and communicated with each other. I loved how the book wrapped up, and the epilogue we got for them. It was a sweet ending. I'm not sure if there is any more to come in this series, but if not, it's ended in very comfortable place.
- janice winterReviewed in the United Kingdom on May 25, 2021
5.0 out of 5 stars All the feels ❤️❤️
I had fallen in love with these 3 in both the prequel novella that introduced you for the first time to Leo and Mason, and the 1st in this series where Quinn was a side character you immediately wanted to find his HEA. This book did not disappoint and was absolutely worth the wait ❤️ This story has a little of the perfect recipe for a book- humour, drama, naughty times - as well as a whole lotta love and support for this throuple - all from the first MMM novel I have ever enjoyed. Hayden Hall really does go from strength to strength and creates worlds and characters that make you feel and fall in love with. If you have never read a Hayden Hall novel - what are you waiting for?!?