Update: AITAH for calling off my engagement because my fiance hangs out with someone she "had no self control" when it comes to sex?

Original post

I broke up with her.

I told her that I need to see her phone if she even wants me to consider staying with her.

I dug through her texts and messages. I found out that she messaged Bob about missing him... about a year ago. Bob asked to meet up after talking about all the sex they used to have, and my gf only turned him down because I had moved in with at that point. Her messaged was

"Wish I could but "my name" moved in, let you know if I get a chance though"

I'm done. I packed my stuff, and I'm moving in with my parents. My gf apologized for those messages and insists nothing actually happened.

Yeah, sure, only cuz you couldn't.

Thanks for all the support btw.

Also, I sweat to god, some of you all could catch your s.o. butt naked with another person, but as long as you didn't actually see them fuck, you'd be all like "Well, there's no evidence they actually fucked, so they clearly didn't cheat"