Looking for book title.

Saw this a while back on Amazon; if this sounds familiar could you provide the title or author?

It’s a reluctant gay erotica. Takes place on a beach (uninhabited?) where I think the two washed up? One is gay the other is not and they share some “experiences” :) together? I guess the gay guy converted him somehow?

Sorry for the vagueness. Let me know, thanks!

Source: reddit.com/r/Erotica/comments/4q119l/looking_for_book_title