He wont leave

I've fallen out of love with my significant other. 12 years and I don't love him anymore. Hes never been a good boyfriend fiance whatever you wanna call him we've been back and forth in our relationship a lot! He just came back from a separation where he left me to go be with the girl he cheated on me with. Realized it was a "mistake" and came back I thought I wanted him back but I don't I hate him for everything he's done to me! Ive told him I don't want to be with him but he won't leave. Everytime we talk it's an argument and I'm tired of arguing I just want him to leave! Leave my home and leave me alone 😭😭 I just needed to vent I have no one to talk to I feel trapped in a prison. I'm losing my self I hate me I hate my life and I know it's because I feel suffocated by his presence ** it's my apt my lease is up in Jan I'm looking for another place and I'm not bringing him with me***