I really wish I didn't say anything

My friend and I dated briefly well we didn't work out long story short we both moved on dated other people and we both broke up with the people we were dating and we got back into contact.

Well we were talking tonight and he apologized for not responding a lot cuz him and his ex decided to be roommates cuz they have dogs together and so they could afford to live on their own.

Well I got a little jealous and opened my big mouth and I said it wasn't my business but I said it in a bitchy way.

It's just this girl and I don't like each other she's possessive and she would randomly message me cussing me out and shit even when we haven't talked at all why they were dated.