AITA for telling my 14 year old son that he doesn’t have the right to call me a bitch to my face?

I have been divorced for 8 years, my kid lives with me, and his dad is not very much in his life. I have a boyfriend of 4 years, but we have been separated for 2. As you figured it out, the reason we broke up is my son. My ex and I weren’t on good terms after the divorce, so I made it a point to keep my relationships away, and it worked for 6 years. I made the huge mistake of meeting my now ex-boyfriend, when my son was 10 years old. He loved my ex-bf so much, but that was my first red flag, 3 months later, my son said some really crappy stuff to me in his sleep, I was shocked, so I decided to record, and my then bf told me to drop it, and that I was unhinged for even thinking that he could call my son mean things behind my back. So I decided to keep recording, and that’s how I found out that my ex-bf had been calling me a bitch in front of my son for God knows how long. I confronted my ex-bf and broke up, and my son was really sad, I can’t describe my pain when I saw him crying for my then ex-bf than me. It has been 2 years, and he hasn’t stopped being rude to me, I stopped seeing my ex-bf when I found out that he was calling me names in front of my son, but the damage was done. My son was a great kid, but after that incident, he has been rude to me, very mean, nothing seems to make him happy, and he says awful things about me when I’m not around, and that’s how I know, because we have a housekeeper that listens, my friends call me dramatic, but that kid called me a bitch to my face, and I snapped, I told him that he isn’t allowed to call me names, and that I’m his mom, I have helped him through thick and thin, and if he still thinks that I’m a bitch, he should move with his dad, my son called his dad crying, and his dad told me that I traumatized him, and that I’m an asshole for saying that, I was wondering should I apologize to my son or not