You Had Me at Merlot by G.R. Lyons

They’re once again fighting over the same boy. But this time, the boy wants them both and won’t take no for an answer.
College professors Griffin Mitchell and Laurence Scott used to be best friends. Then mutual interest in a student—interest that went beyond professional—kicked off a rivalry that left them both betrayed and at risk of losing their careers. When Griff wins a trip to a daddy kink getaway through the Cuffd app, he takes it. Anything to get a break from his problems.
Except Laurie is also at the getaway. And when they both meet Nicky, their rivalry starts up all over again.
Nicky knows one daddy isn’t enough for him, so when Griff and Laurie walk into his life, it feels like fate. But both men want to win him at the other’s expense. Can Nicky convince them to share him, or will their rivalry cost them all their happily ever after?