Third Wheel by Golden Angel

It only took one man to shatter her heart. It will take two to put it back together.
When the ‘happiest’ day of her life ends in humiliating betrayal, Amy turns to the one man she can still trust. Inside the club, Zach is her best friend and platonic top… and longtime crush, if she’s being completely honest, though she would never act on those feelings.
Especially not now that Zach and his ex-boyfriend, Kincaid, just got back together.
Homeless and heartbroken, Amy is starting her life over by moving into the men’s guest room. As she begins to heal, her imagination starts running wild with inappropriate thoughts about her handsome hosts. She can’t escape the fantasies of joining Zach and Kincaid in bed, relishing the feel of being under them, and the
ecstasy of being between them.
But Amy’s double daydreams would never come true. After all, no one’s happily-ever-after ever included a third wheel… especially one as broken as her.