<human>: Can you condense the text into a few key points?

Both my girlfriend and I are both frequent weed smokers, but something doesn't sit with me right. We've been in a relationship for about 4 months, and things go pretty well for the most part. Recently we've been having serious discussions about things that are stressing us out. Between that, school, both of us finding a job, and my inability to trust I feel that things are going wrong. 

I've always been really distrusting when it comes to women, especially after my first real love cheated on me. So here's the thing, my girlfriend doesn't like to get drunk or smoke that often with me anymore, but she does these things at school. She will go there smoke with these random guys that I have no idea who they are, and it makes me feel uneasy. She texts people while we hang out, and I try to keep it to a minimum. It's not like there even important texts. I have to admit I have glanced over from time to time because I was annoyed and they were just general conversation about how life is going. I still don't like it though. She receives calls/ texts at all hours of the night.

It all makes me feel really uneasy and it leads to rifts in our otherwise good relationship. Is it too much to ask that she doesn't have one on one smoke sessions with these random college guys?
<bot>: My girlfriend hangs out and has one on one smoke sessions with guys I don't know, and it makes me feel very uneasy.