my crush has a gf but he’s weird?

So I’ve been in a crush for a while now, but I just didn’t want to admit, first because he’s not my type. I always liked men who were taller than me (i’m 5’4) and the crush in question is like the same height maybe a little bit taller, anyway idc! the thing is I learned that he has a girlfriend, that sucks but that’s life yk so I gave up and tried to “conceal” my feelings for me. The thing is that he always stares at me? And I’m not the only who noticed because I though I was being delusional? It’s been since november that he stares at me, or smiling I don’t get it. Yesterday, he sat next to me, mind you we’re 200 in class since I’m studying law, 200 seats and he sits next to me? Like bro please😭😭😭 And btw that day almost everyone skipped class so… there were hundreds of free seat. So we had a 3 hour class of studying family law, he kept touching my right feet, or putting his hand on MY chair multiples times ??? you got a girlfriend chill man? or when we had a break, he took the opportunity to stare at me while i’m not looking. Am i just weird for thinking that way???

please say anything it’s been months