Caught in a lie? 32f 34m

Long story short, I (34m) am currently hooking up with an ex (32f) from years ago. When we had gotten together, she would trauma dump a lot about her ex being abusive, that he cheated on her etc.

Fast forward to yesterday, we were hanging out and she mentioned something about her ex, and I said "well didnt he cheat on you?" And her response confused me. She said "No he never cheated on me it was just complicated" I sort of just said "oh" and moved passed it because I didn't feel like addressing it. But now I am feeling confused. I have no lingering romantic feelings for her, but now I want to confront her about it and ask if/ why she was lying.

My question is if you were in this position, would you bring it up? I was thinking about messaging her today asking about it but at the same time I don't know. I have no intention of ever dating her again we are just hooking up for fun right now but I cant help but feel weirded out by being lied to.