Should I ask him if he likes me?

So this guy is showing strong signs of liking me (staying around me all the time, sitting as close as possible/pushing his legs up against mine, asking if I want to touch his muscles, wearing a lot of cologne, teasing me, eyes dilating when he looks at me, winking at me, etc.) and I’m pretty sure he likes me. The only thing is, we’re pretty good friends but I feel like asking him will mess things up or make it awkward. I like him but I just want to know if he likes me because it seems like he does.