Ok so hey guys, something feels off lately.

Just took this girl I've been dating for 6 months back to her place after she came over to mine. Today I could hear her sniffling during sex and saw a few tears starting to build up. Went on, didnt bat an eye. Asked if she was ok afterwards, but we were in a rush to get out of the house.

Walked a bit through the city with her, sat on a bench, I could tell she wasnt really alright, asked if she was sure, but this time a few tears dropped. Said she was feeling all sorts of negative emotions, emphasized guilt (guessing from the constant attempts of her ex trying to make her feel guilty for leaving him for me). Hugged her, said nothing.

Whats going on? Did she cheat and is now feeling remorseful? I realize even if she did, she wouldnt have told me, but I really dont know how to go about it right now.

Do I just walk away? Ask her about it some more to justify it doing it? Or is it just in my head?

Also, subtle dread never worked. Only worked when I outright mentioned that I know a girl's place close to where we hung out.