Search Results: he acts different around his friends

So met guy year ago one guy but we've never had real convo. He avted different torwards me than other girls.
After few months college started but we weren't in same social cyrcles. His bff is with me in group and 2 my friends are freinds with him.

So since college started we started to have eye contacts. He would move to another place to see me, he becomes quiet when im near and few times he acted really weird. That was happening for few months. Than he saw me with his bff and he wanted to come to us and acted really funny and silly and it was cute. But when i asked my friend who hangs with him she said that he has something with girl he hangs and she's good with his bff and another from his high school. I saw tham kissing once too.

But still he was looking at me even when he was with her. I was confused.

Once he was standing and watching me and friends passing and than continue where he was going and his friends were few meters behind us and i taught that he waits for tham. Strange.

So all of that was 10 months on college and im confused. His bff who's my friend i think he don't even know how his friend acts around me.

Guys why would this guy act like that?

90% sure he likes me because he will always stare at me and his group of friends will stare after he's said something to them. Also if I'm walking behind them w a distance they'll look back and hold the door open. He'll smile and look at me and his friends will then turn w a smirk. Also i'll walk into the empty class and out of all the seats he'll always come and sit next to me, then i'll hear his friends giggle in the back behind him. What he does that freaks me out is he'll be sitting next to me and then stretch out his leg in my direction then hit my chair/ desk trying to get my attention, as i said i always freeze in this situation and pretend like i don't feel it or notice, then his friends will like giggle in the back or quietly laugh and i get red and am like omg what is going on, cuz i don't understand if this is a flirting technique, never heard of it. Anyway what does he think of this, does he think "r u kidding me why aren't you like turning around i wanna get your attention" or like "awww lol ik u know, this is funny cuz you're playing coy and think i don't know" or maybe something totally different, but atm I'm feeling totally confused.