Yo for real just joke about being gay until he catches on or is disgusted
Then if he's disgusted just say "wtf you're not gay too? get with the times"
or some meme idk
Play it off as a joke, create bants, and then if everything works out and he says "ye im gay" then you kiss him so hard that he falls out of his chair and then you can be happy forever knowing that you did what no faggot on this board has ever done>actually kissed a boy
Good luck gayland