In a girl situation.

Ok 4chan. So right now I'm on my third girlfriend.  After I broke up with my second one, I tried to rebound. And after 5 months I got a new one, girl #3. After 2 weeks of dating, I realized that I can't stop thinking about girl #2. But if I break up with girl #3 she will hate me forever because she hates girl #2.

So WTF am I supposed to do here? I want to get back with girl #2, or at least bang her, and I'm sure this feeling will be gone.