<human>: Me[19m] and this girl [19f] started seeing each other and hooking up regularly this year, and I think its getting out of my control. we've been together for about a month and a half. 

I liked her a lot last year when we met at uni, and I was overjoyed when it finally evolved into something more than friends. I have this sort of reputation on campus of a heartless womanizer, and I felt like this year I didnt want to continue this. I haven't been in a lot of long term relationships, but I want something more meaningful than college flings. we've been spending a lot of time together, and I know she's hesitant to start something meaningful. 

last night we were at a party, and in my drunken state I was really bothered by a "friend" of hers hitting on her. when I talked to her about it, she reminded me that she wants to be in an open relationship, and we had talked about this before. this hurt ( i rarely show emotions) and I know I should have the self-respect to say no, but I really like her and the sex is great. 

part of me wants to retaliate and hook up with some breezy tonight, even though she says she hasn't done anything with anyone but me since we started getting together. this just makes me feel like an option, and it sucks ass. she tends to be a little hipster condescending, and told my roommate that getting in a relationship with me scares her. she's a nice girl, but I dont wanna lose her or compromise my pride. as of now im trying to give her space. another thing is she told me she's bi because "the man is trying to keep her down", and that doesn't really bother me, but the small amount of MRA in me says this is a red flag of sexism.

Can you condense the text into three sentences or less?
<bot>: I feel like the nancy to her sid, its cliche as shit, I just want something steady and she doesn't.