I NEED ADVICE 🤷🏾‍♀️🤷🏾‍♀️🤷🏾‍♀️🤷🏾‍♀️

So my ex bf broke up with me and is dating a associate of mine but now me and the girl don't talk at all. After our breakup he asked to be friends so i agreed and we would FaceTime and talk all the time. So one day I saw a post he made about his new gf and decided to cut things off and he was upset.Was this a good idea? Why do you think he wanted to remain friends?