My BPD partner keeps on mentioning her coworker’s name despite knowing I have Rj

[BPDloveridkk781]

So my partner has work and during work she always brings up this guy’s name and how she is always annoyed because her coworker is always laughing or always making her laugh.
Earlier, she told me that the guy and him is getting closer because of laughter. We had a fight about this before and I told her many times that I have retroactive jealousy but she said the reason why she kept mentioning her coworker was because if she needed to vent or rant about what was happening during work she was only doing it to vent or share it to me to have a topic but the thing is she is enjoying it too much.
I feel like she is purposely making me jealous, we agreed no more stories about a third party or bla bla bla but she still keeps doing it. I need adviceee

Our objective is to better understand the struggles our child faces and to learn the skills to improve our relationship and provide a supportive environment and also improve on our own emotional responses, attitudes and effectiveness as a family leaders