Search Results: friends act around girlfriend

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.

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! :)

I've been dating this guy for 6 months now. The issue is that when i said i loved him and he said it back, he hasn't been able to say it back without flinching. Even once saying that he doesn't feel as strongly for me as i do for him. He also refuses to acknowledge that we're boyfriend and girlfriend, saying he doesn't like the term. Yet i introduced myself to one of his friends as his girlfriend and he didn't have a problem with it. It's almost like there are moments where he's perfect for me, while other times he doesn't care. I don't feel safe or loved within the relationship. I asked him to tell me that he wants me to stay, that he can see a future with me, and the answer to that question varies depending on how he's feeling at the time. He's also jealous of any male friends i have, yet i'm expected to tolerate him saying 'love you always xxx' to one of his female friends. Yet he can't even say it to me.

Now i've started talking to another guy at work. He makes me laugh, he isn't afraid to approach me to talk to me, no matter who's around, and he isn't afraid to make a fool of himself to me. He messages me for hours, and states that he's excited to see me, and messages me each day even if we've seen each other at work. Whereas the current guy i'm dating won't call me, or refuses to carry on a conversation (sometimes hours between each reply, days or weeks if we've had an argument), yet he'll talk for hours with his 'friend'.

I'm in love with the guy i'm currently seeing, yet he doesn't make me feel secure in the relationship and i know i can't force him to act the way i want him to with me. Whereas this other guy is so open and genuinely happy to talk to me, it's a breath of fresh air.

I honestly don't know what to do. I'm torn because i want to stay for the hope that he'll be the person that i know he can be, who he is from time to time. Not the version where he threatens to end things after every argument.

What should i do? :/