Is my friend an asshole or just a normal friend?

My friend is super chill and nice. And super funny af and always makes me laugh. But he always tries to touch me or pss me off. Like he always grabs my nipples and pinches it hard af. He left bruises the last time he did it. And he does it so often. He used to grab my ass. Yes grab my ass and im a fucking guy hand he is one too. He has a gf but he does t to piss me off. I told him to stop that shit but he says he only does it cause i get pissed off when he does it and he thinks its funny. Hes alot bigger then me so i cant do shit. i still wnna be his friend but he always does this and its getting on my nerves. and my other friend we play this game where if you flinch you get slapped o the neck. And he slapped my neck so hard i felt my neck and it was straight red. and he consgtantly tries to spar me or slap box and always slaps me