<human>: To be fair, not all of her teasing annoys me. She can call me dummy or retarded or an idiot and I don't care, I'll do it right back. That's her personality, she's a very sarcastic person and loves to tease people she's close with. But there's these jokes that she'll sometimes make that are really starting to bother me. She'll joke about leaving me or her being with other guys, and its actually kinda hurtful. 

For example, a few days ago I jokingly told her that she should be a stripper for Halloween, but that she's gonna be my stripper. And then she replied "I'm already someone else's stripper". She quickly said that she was joking, but it still annoyed me. And then she'll "jokingly" break up with me, like we could be teasing each other and after a few lines going back and forth, she'll pretend to break up with me. When she does this, she only says that she's kidding after I say something that makes her feel guilty. It's just gotten to the point where her joking has become kinda hurtful and very annoying. 

We haven't been together for too long, and I'm thinking of just breaking it off because I'm still really young and could be having more fun just dating around instead of being in a serious relationship. But still, I do like her very much and I do hope that we can last for a while, but her comments are really turning me off. I have mentioned it to her in the past that it bothers me, and she was very sorry, but she still occasionally makes these remarks. What should I do? Should I tell her again that these jokes are bothering me, but in a more assertive way? Or should I just save myself the trouble and get out?

Can you condense the text into a few key points?
<bot>: girlfriend makes jokes that are becoming hurtful, I've already told her how they make me feel but she still occasionally makes them. Not sure if I should assert myself some more or just leave.