Am i wrong or am i right?

So short version of a long night.
mand my ex(we are trying to work things out) were out at a party earlier that day he got P I S S E D at me cause some one told him something about me so he wanted to get rid of me even said to fuck off and threatened my fam (hes got shady connects)
anywho he decides to invite me out i decide to go out with him (to take care of him he is sick and like to party HARD) so I'm driving we get to the first party in which he leaves me to go get beer for a bit which i agreed to so thats fine by the time he gets back like 10 mins later the party is over so we go to another one this time im now taking him allong with three of his friends so we get there he starts drinking he calls me a bitch at one point cause he said he thought i was some one else that bumped into him then that party is over and we all gather on what to do some shady deals go on and he ends up telling me to take his friends home and then go home so i get mad and tell him that nah i was supposed to go with him plus those arent my friends anywho he decides to take me as i am taking his friends home (we were to meet at a friend of his house to leave my car and drive with another guy) his friends tell me he is shady not to be with him and that i am wasting my time...we leave to another party (once he told me that if i were to do coke with him he would stop doing it) we get there and i do coke for the very first time hoping ill overdose to teach him a leasson i seriously did like ten or more lines plus like 8 keys and like 4 nose stuffers anyways as we are there he mentions to a friend of his that she should find him a hubby so i get pissed the hell off but i handle it later on when we leave his friend who is driving us crashes so we speed off to his house from which i walk to the house of his friend where i left my car then go get him and two of his friends i drop them off and we drive home as we drive home i told him that "alright you were pretty fucked up so we should leave eachother alone and just go our ways" (not that nice) so he punches me on my face (we have gotten into 3 physicals) anywho i start crying cause idfk so he apologizes and says he will make it up to me...hes pissed at me now and says that i keep fucking up and shit....was i wrong or right to just try and end it there?