<human>: So my girlfriend and I have been together for about 6 years since high school. About 2 years ago she said that she got drunk and slept with her ex. She said she was black out drunk and didn't know what's going on. She didn't tell me what happened for a year so I found out last year.

Fast forward to the present she told me that she want to be friends with her ex and don't want to have to avoid him. I personally am not comfortable with her being friends with her ex but she says that he has nothing to do with us and I should focus on our relationship instead on focusing on her ex. She also said that I should be able to deal with my discomfort about her ex. When I told her that i want her to stay away from him and have no contact with him she told me I was being controlling. She said that she is in love with me and that she doesn't want him.

Her ex was also her first but he never finished highschool and his life isn't going anywhere.

So I need to know should I just let it go and deal with them being friends and trust her? Or how can I explain to her that I'm not comfortable with them being friends or what else should I do? 

All feedback is appreciated but I feel like a girls point of view on this will help a lot.

Give me a shortened version of the text
<bot>: My girlfriend of 6 years cheated on me with her ex now a few years later wants to be his friend and for me to deal with it. What should I do?