Search Results: he acts different around his friends

So there's one guy in my class that acts different around me and torwards me than other girls. He's guys are nice to me and talk when he's not around. I catch him looking sometimes and he quickly look away. He looks but don't talks. Also he and guys sometimes comment me and stuff (don't know what and why). But he was never rude torwards me.

2 days ago i met his friend leaving and exiting college. He started to talk to me and we talked infront of college 5-10minutes. Than this guy came and it all become really awkward. I wanted to run away but i didn't know how and when lol. So they talked but this guy was walking and looking in his phone and was pretty weird. His friend was still and relaxed and friendly, but this guy was all jumpy and didn't talk to me. So when his friend turned torwards him more i said "bye" and they both looked at me and said it back.

This guy has girlfriend and he acts weird just around me for few months now.

Hi guys I need your help, there is a guy at my school he is one year older than me and we have never spoken to each other.
He stares at me often and looks at me when I'm not looking, he is shy when I'm around him, he acts different and talk loudly, he blushes, he tries to touch me bump at me, his friends act weird when I'm here like they push him at me or hit him when I'm here one time they were saying ask her out and another time he said go talk to her, there is one guy that he is my friend and his friend ask me who I like and every time I'm with him my crush come and stay he talks to him while looking at me and many things like that. He almost watch my stories everyday on snapchat but doesn't text me or anything. So do you think he likes me and can you give me advice what should i do?

I've meet this guy few months ago. He is loud, confident guy that usually stands out in group.

His guys are always normal, around me when he's not with them. They talk to me. When he's with them they start to ignore me and act pretty strange.

This guys acted few times normal and it was surprise for me but usually he doesn't talk to me, sometimes i catch him looking at me, treat me different. They sometimes have they own "jokes" about me and i don't know why.
It all started in our first interaction when i borrowed him something and he looked at friend and that friend said my name loud and smiled at him.

Once i was texting and he like brushed next to me and stopped for second and than acted like nothing happened (i was next to my table and there was planty of space). When I catch him looking he looks away or run through his hair with hand and looks away.

He looks at me when he's passing, sometimes he didn't noticed me.
But also when i was coming they looked t me and when i came closer they turned like they didn't see me even they know i saw them looking.

There's more stuff when he acted pretty weird but i don't know why. He has girlfriend and they seem pretty happy together.
What is deal with him?
If there is another explanation please write it down! :)