Need advice😭 so haven’t been with my sons father for about 3 months and counting now, he still comes around as much as…

If you don't want to be with him then that's the way it is and he will have to deal with it. You have all the right to find someone who makes you happy and it's important for your son to see you as happy because a happy mama is a good mama, if his father wasn't doing that for you then it would have caused more harm than good in the long run. It's none of his business if you move on with someone new especially if you weren't married but even if you were it still doesn't matter. I left my oldest son's father when he was 1 and 8 months later I moved on with someone new and he wasn't happy so he tried to mess things up by calling cps on me but of course there was nothing to make a case on, he was just jealous and now if he tries to call again for any reason and there's nothing to be found again, he can get in trouble for harassment. I'm petty... he was an abusive dick and after 3 years I was done dealing with it and I refused to deal with his controlling bullshit any longer and he knows there are things I can do to make his life miserable so he stays in his place. Of course obviously I'm not saying be like me because my situation is a lot different but my point is, he has no say and you need to let him know that.

Separate the two now. If you pursue this relationship it is none of his business just like if he found someone else it is none of yours. As long as the people that you two are dating are treating the children correctly there shouldn't be a problem. If you're talking to him about your new relationship stop now; it isn't a healthy habit.