still attached

hi, i've broken up with my ex about a week ago due to his agressive side when he drinks alcohol, and his disrespectiveness he gave me during the relationship. i keep thinking back and speaking to people about all the bad things he had done to me, but i still miss him and talking to him and living with him and everything, i can't seem to take my mind off even if he was terrible. Any advice on what you guys do to help not miss them? i don't see why i should be missing them because he didn't always treat me right and i hope he realises it but i don't want to give in due to the fact that i miss him