Me and my girlfriend of the last 3-4 months broke up a week ago, and she works with me (I know not to do this) so we still see each other most days. I'm not good at hiding my feelings and I was sad, not like crying like a little bitch but bummed out about the whole situation (like going from having sex every time I saw her outside of work to no sex). I tried my best to avoid her for a few days but she could tell what I was doing and said something about it, and this girl refuses to talk about anything serious so she just banters at work like we did when we were in the relationship.

I have no intention of ever getting back with her, when we broke up she said "I hope we can be together again sometime" and I said something like 'no, if we break up it's for good. I don't leave unfinished business behind me.'

This is especially difficult for me to deal with bc I don't talk about serious issues at work, I keep things light-hearted but I don't want to just pretend like everything is fine when she was a bitch to me on multiple occasions which led to the breakup. Most of her banter is about customers or making overtly sexual jokes, I've heard her mention that I have a big dick to other employees so I don't want to just be rude about it bc she could be useful in some way.

Thoughts on this?