Hotter Than Hot by Ariella Zoelle

Baxley has been teasing Callahan for years about wanting to be with him. When Callahan finds out his best friend is actually serious about being with him, his curiosity gets the better of him. Why should being straight stop him from having fun with his sexy best friend?

Callahan:
Baxley is a lot of things: an awesome friend, a relentlessly shameless flirt, a little too attractive, and way too tempting when I’m straight. All of his heated teasing is starting to get to me, making me wonder if maybe indulging my curiosity might be worth blurring the boundaries of our friendship for a night. But what if it’s so good that I want a repeat experience?
He promises me an experience that’s hotter than hot, but am I ready to discover that I like what he’s offering me?

Baxley:
When everything about Callahan lights my insides up like a fireworks finale on the Fourth of July, I knew from the moment I first saw him that he was the one for me. The only thing stopping me from making him mine is that he’s straight. But that excuse goes out the window when he kisses me, like he’s been dying for a taste of me for years.
If he’s ready to take a chance on me for one night, can I make him fall in love with me forever?