I think I’m in a bad relationship [slight TW]

Okay so this started Tuesday. My boyfriend hit me for the first time. And he hit me hard. I told him he hurt me and he was like “You’re just weak, I didn’t hit you that hard. I know I didn’t hit you hard” and I said “so why does it still hurt?” He called me weak again after I asked why it still hurt. Thing is, he asked me last night why I was mad and I told him I was mad about him hitting me and he apologized. But he also kinda keeps pressing me about giving him a baby despite me telling him no SEVERAL times and telling him I’d rather not talk about thag stuff. I liked him romantically but he scares me. I thought like we’d have a good sexual connection and I thought he’d make me feel happy and protect me and yk all that lovey stuff. And now? He constantly has me worried he’ll give me his love and then just randomly take it away from me for no reason like he’ll refuse to hug or kiss me if I don’t do something he wants like today he said he wouldn’t kiss me if I didn’t sing in Spanish and I told him I wasn’t comfortable doing it and he was trying to make me do it anyways. He asked me about my future at one point and when I didn’t mention him as part of it, he was upset with me. Not to mention he constantly headbutts me. Which I’ve also told him I don’t like. And he’s like “I do this to my cousin all the time, it’s fine”, I told him again it hurts. And he goes “it’s not my fault you have a soft skull”. Every time I tell him I don’t like something he physically does to me, he doesnt apologize he says something like this. He hurts me physically and emotionally and completely disregards my feelings all the time and I’ve started to think he likes upsetting me, that he find it *entertaining*. Everyone tells me to leave after hearing the story and I know I need to but…I can’t do it, I can’t leave