Can we move past this ?

Soo long story short my boyfriend and I have been having issues there was a DANCO put in place back in September but we never actually stopped talking. I pulled back because I didn’t wAnt to be the reason he gets in trouble over the last month they dropped the danco and we began seeing each other more and more. Come to find out he just went to flordia with this girl and lied about who he went with. Then he’s been having a relationship with another girl. I gave him and ultimatum and he choose me. That being said I went to pick his stuff up from her house. (Partly just to prove a point). But I can’t help but be insecure about the whole thing I express this to him and he’s super loving and reassuring but fuck it still hurts I really want to go punch her and delete her from every aspect of our life’s ..

help how do I move forward with this