I think my girlfriend is going to break up with me?

So about two nights ago my girlfriend and I were cuddling in bed (we've been going out for about two weeks) and we started getting a little kinky, cause she knows I'm a virgin and she's not so she teases me, I'm 18 and she's 22. We went a little further but not actual sex, and everything was cool. Next day, she said she didn't want me staying the night, and of course I knew exactly why but she made up a completely false reason. So the day after we had a little heart to heart, and she first thought that I was only with her to lose my virginity, which is totally untrue and I told her that. She then told me that she had a track record of dating guys for about one or two months, then breaking up with them out of boredom or other stupid things. Her longest relationship was 6 months. She also said that she knew that if I stayed the previous night we would've had sex, and she was worried that because it was my first time I would get attached, because that's what happened to her. And she didn't want it to be two months later if she broke up with me for me to still have feelings and attachment. I'm a mixture of confused, disappointed and angry, and I'm sure that now she's told me that she will break up with me sooner, and I really don't want that. Because despite all this, I have developed feelings for her and she has for me. What can I do?