I had a short term thing with a girl for about 3 months which ended because we don't live in the same countries, but I fucked up and stayed in contact with her over text for the next couple of months, only she initiated. Recently she was mentioning a tinder date on a group we are together, I felt that was quite disrespectful for her to do coz she'd get mad even if I mentioned another girl, it's okay whatever she does we're not dating, but I don't wanna know.

So I left the group 3 days later, waited a bit so she can't know it was because of her, today she kept messaging saying is it about me what did I do, which reminded me of a thing which she said she can't tell me since it would hurt me, this thing was from when we were friends but hadn't hooked up, so I figured it didn't matte even though I was very curious. I used the same logic with her and said I'm not telling you why I'm cutting you off coz I don't wanna hurt you, a part of me wants to ask her what that thing was which she couldn't tell me incase it helps me get over her, since I do kinda have oneitis with Her, but I've had bad experiences asking girls I've been with about the past, it always feels I wish I didn't know.

So should I let the past be in the past or ask this chick what is the thing which she didn't tell me to spare my feelings? I'm gravitating towards just not replying to her and removing her from all social media to completely move on