Overshared a colossal secret at work about another coworker. I am freaking out!

I work in a very small close knit team and shared something huge. I am 95% confident this won’t go out but at the end of the day I am at work and these are not my friends friends

I had gone out with another coworker from a different but still closely working team. She cheated on her long term bf and it was a huge thing. She distanced herself from me because she got very embarrassed. It was very sensitive and obv none of my business

It has been months since this happened and I accidentally told my team about this. They had a field day with it.

I know I overshare a lot and am trying not to but ai feel like I crossed a line today. Idk what to do. Over sharing is a problem now. I am trying to understand why I do it or how to stop it but today is a huge setback and if it gets out - I don’t even want to think about it. Help!