Is OTHER wrong in the post ? POST : She \[20F\] and I \[20M\] have been dating for a semester an half. We just yolo'd the relationship but I'm her first relationship ever, so I am afraid to break up with her. We are close friends with many people and breaking up with her could potentially cause a lot of awkwardness within our group. 

  
Getting into my reasons for wanting to break up with her: She is very social with every guy she meets. And I don't mean being very conversationalist-ic. She doesn't notice often but she flirts with nearly every guy she meets. She goes partying often and gets drunk with her friends, usually to the point where she doesn't know what is going on or is only vaguely in control. Last time this happened, apparently a few guys tried to hit on her and her friends pulled her away after a few min and tried to tell her she already has a guy (me), but she "didn't know" they were flirting with her. She even sc's a lot of the guys she meets and "talks" with them a lot. 

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Like I get she might want to look around at other people because I am not the best looking (I am guessing, most people say I look decent). But it seriously bothers me and I have spoken with her about this because she used to bring up a guy living near us a lot, joking she wanted to date him if she ever got really lucky. 

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The part that bothers me the most is that I heard this all from her friends, not her. I am overly honest with her, she knows everything about my past and prior relationships/crushes, etc. I know a lot about her too but since she has been going to more parties and stuff, I have been knowing her less and less. She is personally quite immature and often glorifies guys she meets. Another thing is that she gets really touchy-feely and close with my roommate and its starting to make me feel uncomfortable. Other people have noticed this and pointed it out to me, but I don't want to talk to either of them because I don't want to seem like a jealous asshole. So AITA for feeling like this and WIBTA if I chose to have a very serious conversation with her (I talked with her like this recently about her maturity to no real avail) or break up with her? Could you please help with any advice? I am looking for real help, so please don't be overly cruel with responses. 