My girlfriend of 16 months slept with her ex 1 day after we broke up, is that normal?

Tallguyshortheart
So to elaborate on my question, I am assuming this was pre-meditated and this girl has a lot of issues and demons she is still sorting out. She was very young and hell shit happens. But the fact, that she went back to a dude, that she told my family, her friends, and me that her ex was physically abusive and I heard stories that were sounding like sexual assault. So yea... it hurts, but lesson learned. If the first to the second thing they tell you is a lie, in this case, she told me she was 21 but actually, she was 18 when we started dating and I was 22, how is that a good foundation for trust?

At the end of the day, I'm over it. Never beat yourself up over anyone that discards you like that. And also, red flags! Make sure to always watch out for red flags. I was nieve and I guess I paid the price.
My girlfriend of 16 months slept with her ex 1 day after we broke up, is that normal?
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