Was joking around with my girlfriend and she was like, "what've you been doing huh?, did you cheat on me?".

It was coherent with the banter, and I said, what would you do if I did? Not very smart but hey, lapse in my judgment.

She said she would leave me at first but might come back because she thinks she couldn't stand not being with me. She said it would depend on how much it'd hurt her, (???), but she'd probably leave me at first. She asked me what would I do and I told her I would drop her ass. And then she said, "yeah I know, hmm, actually I think you wouldn't". I was like, you can be sure I would, I would drop you for less than that. It's not even about if I can handle it or not, it's just that if it happened once, I'd never give you the chance to do it again.

It wasn't a big talk or anything, all was said very lightly in the middle of physical play and banter, but it definitely struck my mind a lot more than I showed.

I don't know if those words are to be taken very seriously, since when it comes to her actions, I have nothing to say. She's very respectful, doesn't have guy friends, doesn't do any weird hanging out and I have her phone's password, which she even gave me for GPS since my phone is crap last week.