Last night, we were talking about an old friend of ours from school and he mentioned he knew a girl who cheated on him, and I asked him who as I most likely knew her. He then proceeded to say “I don’t want to upset you but I had a thing with her, we met at a party.” This caused me to shut down, my body began giving me signals of anxiety and discomfort. I haven’t stopped thinking about it all day. Also, we have had multiple conversations where I have explicitly stated I don’t want him to mention anyone he’s been with in the past as it causes a bad mental reaction from me. I begin to obsess, find their social media and compare myself to them. I still think about girls he’s mentioned he’s had a thing with months ago. I feel sick. I’ve been on edge all day. I now have this old friend from school muted on instagram because he is still with said girl and posts about her. I’m going to try to have a conversation with him tomorrow about it but I wanted to post on here to see if anyone else has had a similar experience and has any advice.