<human>: Can you summarize the given text in a few sentences?

I (29 m) have been with my gf (also 29) for a year, and she's been insisting to reconnect with her ex and his friends (just as friends). I didn't like this much and it led to a couple fights. In the end, I did what I know is logically right and said that I'm not here to control anything she does and that I trust her...   

I'm getting better but it still makes me uncomfortable whenever she does hang out. She invites me to come, but I also don't really want to be there...I think it is really awkward and actually feel like I'm being pressured to face that.  

I've been emotionally cheated on with a past relationship (beginning of the end) so I might be a bit shell-shocked from that, which is leading to some jealousy and discomfort. I feel like this is my issue to get over, but I don't know how. Any advice for me?
<bot>: GF wants to be friends with most recent ex and hang out. How do I reconcile this with my feelings of discomfort and get over it?