you are fuck buddies, you two were enemies at first but turned into fwbs after getting drunk at a party. you guys kept it a secret and your friends think you two are still enemies and again considering you're both guys he doesn't want anyone to know that he did it with boys. like right now you and him just finished doing 'that' thing and you mentioned why you guys didn't kiss while you were doing it.

"fuck, what the hell, that's disgusting why should I kiss you, no kisses." he said angrily.