What should I do? I found out my girlfriend is cheating on me again.
Do you know why she cheated on you? Did you have an argument?
Yes, we had a heated argument and I broke up with her and she said "You would never find anyone better than me" and I believed her and we got back together.
It's not okay for your partner to cheat on you. You should identify patterns of behavior in your relationship. That way you can avoid making the same decisions and repeating the same arguments.
Fuck I had a feeling this would happen
Talk to your partner about your concerns and be honest about what you expect from your relationship. This will help clear up any confusion and let you know where both of you stand.