Moving out

Hello! So I’m 18 turning 19 and have been with my boyfriend for 3 years now. His dad is moving and asked if I would want to move in with him and my boyfriend. I obviously said yes. But how do I tell my dad? As of right now I sleep on the couch because I don’t have a room or even a bed at my dads house and he said he won’t let me take birth control if I live with him because “I’m not dumb enough to have sex”. Not to mention he takes my things and yells at me for such unreasonable things and even said if I don’t hang his clothes for him I can’t wash my own laundry until his is done!! How should I tell him I’m moving out in a month!?!!