Should I warn my ex that my dad may be contacting him for insulting me?

was seeing a man unbeknownst to my father. We met 5 years ago and were in a relationship for a year. I have 2 male friends who aren't Muslim but they're are close to me and we have never had a romantic relationship with each other.

My ex bf who is a Muslim man knows my father but we never told him because I wasn't ready to wed and getting family involved can complicate things. As if things have gotten complicated now. 🙄🙄🙄My ex bf gave me an ultimatum to cut off my male friends or we were over. I wanted badly to compromise. Even though I knew my friends would understand I decided to break up with him.

After this he called me every whore in the book and has said nasty things to me. I haven't responded to the comments and I have nothing bad to say about him. I did fear him starting a rumor and it getting around to my dad and community. So I told my dad, not in great detail but about our relationship and why we broke up.

My father is disappointed we didn't tell him sooner. I didn't tell him about all the mean messages but I did tell him he called me a whore. I'm afraid my dad may contact him and I want to warn him. But should I?