I'm angry with a co-worker I used to date after she broke up with me to date another one of our co-workers.
Wow, that sounds terrible. Why did she break up with you? Not just to date another person I hope?
We were starting to have some personality clashes and then she just decided to break up with me.
It sounds like you may be better off without her. She seems like she's not ready to settle down and doesn't seem to care about the way she treats others.
It just seems she's dating another co-worker to punish me for our issues. I have to see the two of them everyday and it's really difficult.
Dating someone from work can be really tricky because of the situation you've described. Breaking up with a co-worker can cause issues in the workplace because of hurt feelings. Talk to human resources and see what they think about this.