Backstory:

I made a couple group chats with people on facebook for us to create bonds and do things together.

A couple of weeks ago one of the girls comes to the group chat really excited about this guy she met and saying they had sex and how she really likes him. I had sex with this guy a couple times in the past and we might have talked for maybe two weeks. Nothing serious just a fling from a while back. She deleted herself from these group chats and didn’t tell anyone why. I deleted myself from the group chat around the same time because a couple of the girls were talking about my fertility issues behind my back. My cousin (Macy) texted and asked why I deleted myself and I explained it to her. She then told me that this other girl left and I figured me having relationship with that guy was why. Fast forward to today, she confronted me. (I will post the conversation below) Was I in the wrong for not telling her about me and the guy?