Needing some advice/help😩

You don't have to do anything you don't want to do, even if you've done it before, even if it's your partner's favourite thing. He should accept the no and move on. He absolutely should not be doing it without asking your permission. Where I live, that's a crime under sexual assault legal code.

That is assault!!! U shouldnt ever be coerced into doing anything u dont wanna do. Ur not being a bitch at all

I would go with your gut here and I agree with Hadassah. If he's been willing to do it in the past, I would guess he would have no issue doing it again unfortunately. He definitely sounds like he's trying to coerce you to do something you don't want and if he really loved you and cared about you he wouldn't try to do that so the best advice I can give is to have a very serious conversation with him about the fact that it's not okay that he's pressuring you to do this stuff and ask him to really think about how he would feel if you were pressuring him to do something he didn't want to do. And if you can't come to an agreement I would say have enough respect for yourself to leave. As difficult and complicated as that is with a child, if you try to talk to him about this and he continues to brush you off chances are he's not going to change unfortunately.

Have a little update: he’s been quite affectionate with me today so now I’m more confused than ever

And he has not mentioned anything along the lines of it at all today, acting as if everything is normal in a way