My ex from 2020-2023 doesn’t stop nagging to be back with me

We started off dating when I was 19, eventually moved in together, then everything got even more rocky. He mentally abused me a lot because of my past. Him being 10 years older (he lied about his age in the beginning) ofc had more experiences than I did, but ofc it’s not right for a female to do. It got to a point where he was picking up on vaping & drinking more frequently..

We got in a drunken fight one night, he put his hands on me & he put me in jail… He then “felt bad” for me bailed me out & paid for my lawyer fees. There was a few more months until our lease would be up. So after we both parted ways back to our parents house.

I decided it’d be best for me to completely ghost him after, for my own sake. It wasn’t long until he started harassing me through TikTok, reaching out to my friends to msg me, making fake numbers to call/ text me. He started threatening to sue me for the lawyer fees that I supposedly asked for. He showed up to my parents place unannounced, talking to my mom through the ring camera, to get me to sign some sort of paperwork.

Fast forward months later he did end up suing me & somehow won. He said that he only did it to see me & he didn’t care about winning. Even though he said he needed the money to pay for fumigation for his home he purchased. (Which he confessed way later on he didn’t actually purchase) He brought me a gift & decided to ask me to lunch after. I ghosted him some after that & his friend wrote me a long paragraph stating that he wanted to help pay for my expenses even if we weren’t together, but I shouldn’t ignore him. But from what I understand is, he wants to have me by a threat, & if I don’t, he will go back to getting law involved…

I’m now on pretrial diversion program & by the looks of it I don’t have to speak to him at all anymore. I just want to move forward & put this traumatizing experience way behind me. He claims he changed into a better man & wants the best for me. He’s making all good promises to me like new car, house, happy family & wanting me to marry him for the benefits. Honestly, I stopped seeing him in that way a long time ago. I know that if I ghost him he will continue to harass me. I don’t understand why he can’t just move onto someone near his age group. It’s like I’m his only option. I wonder why men go for girls in the younger age group like that. I always thought it was weird, but me being young & naive. He literally gets disgusted at the thought of girls in his age group. It’s so cringe now that I look at it.

I wanted to know if anybody else experienced something similar of dealing with toxic men or has some words of advice.. That would be greatly appreciated.