my toxic relationship doesn't end

i broke up with my boyfriend of a couple years because i'm tired of the mental abuse and how he treats me and i kept texting him because he would text me and i didn't want to be the one that stopped talking first i felt bad if i did that but i also don't want to speak to him and somehow now we are back together he started calling me baby now and i feel so mad because i should've just stopped talking to him what do i dooo 😩 i just want to be single but everytime i try he finds a way for us to get back together.