I have no one to talk about this

I broke up with him now he's celebrating his birthday happily. I hate him he didn't even allow me to talk to my friends when we were together and he was extremely jelaous like even about my gay friend it is so ridiculous he only date guys AND he still was jelaous but he had a gay and girl friends and that was okay but i couldn't have any guy friends. I couldn't even hang out with him when he was with his guy friends he kept asking me about his guy friends like "you wouldn't cheat on me with him right?" And he had dreams that i cheat on him with his friend i tried so hard to make him believe that i won't cheat on him. But he could flirt with a girl in front of me then says i'm being dramatic and she's like his twin and he introduce her to his friends, bring her to everywhere when he hangs out with his friends even though i tell him i don't like that, also doesn't even tell me when he is with her i learn that from someone's story but when i ask him he didn't even tell at first i had to keep asking questions and he said his friends asked her to hang out he didn't want it. I even lost my friends because of him i'm so lonely i lost everyone i don't even know should i aproach my old friend but i feel lonely and dumb i hate this feeling i thought he loved me and we were fine. But all i had was this. He didn't even respect my boundaries he always tried to humiliate me in public. I hate that i was with him. This is disrespect to myself he always blamed me with disgusting things and i let that happen constantly. I don't even have anyone to talk about this i don't wanna tell my sisters i was that dumb and i have no friends now (also he tried to isolate me from my family too but it was when i was trying to break up with him so i told my sister about it and my sister supported me i'm rlly glad i have that because that was impossible for me to break up with him because he is so manipulative that after we broke up he intentionally wore pjs and tried to look extra sad at an exam which we both take that class but he was normal the other day when he thought he wouldn't see me, thinking maybe i pity him or something and talk to him)