<human>: I have been seeing this girl for around 2 month, everything was going great. But now I am in two minds about her.
  
So, we got onto talking about her ex and how abusive he was for a long period of time and she mentioned how she was sick of him trying to contact her and how she didn't want to speak him at all.  
  
I later found out she had been talking to said EX. What I can't understand is why someone would wanna talk to their EX, let alone an abusive EX.  
  
I confronted her about it, and why she didn't tell me the full truth and how I don't feel comfortable with the situation. She claims she'll stop talking to him, but I'm not sure if I should trust her and end it or just hope for the best.
  
Am I overthining this and do I owe her an apology? I've never been in this kind of situation some advice would be great!

Give me a shortened version of the text
<bot>: GF talking to EX after she said she didn't even want to, said she would stop. Not sure if I trust.