Ex constantly hitting me up

So I have to say, my ex is a bit of a ladies man. Very charming, goodlooking, educated. When we first started talking, yes I gave in to his ways. He was charismatic and hypnotized me with his dark, deep, sexy voice and those brown eyes. But as months went on he seemed to change. He got kind of mean. I feel when we crossed that border with sex, everything went down. It seemed that's all he wanted to do all day and if I wasn't in the mood, he would make me feel bad. But after we went our seperate ways I felt things got worse. He wasn't who I thought he was. He started calling me names and saying I was a whore. He would praise about his new girlfriend to me. I didn't give in much cause I knew his plan was to make me jealous. I felt like I had wasted my time with someone who was a phony. I knew the best thing for me to do was just forgive and forget. Believe me it was extremely hard; even though he treated me
Like trash, I still had feelings for him. He was the first person I gave myself to. Things began to settle down between the two of us and he seemed to leave me be. Sometimes he would text to say "hey" and that was all.
Now  I can say I have found someone new and I couldn't be happier. ❤️ my boyfriend truely is amazing and I don't want to mess things up between us. I feel respected and loved by him. About a month ago, my ex had popped up again. He asked if we could talk. I asked what was wrong. He said "no I want to talk like how we used to". I explained how I have been getting serious with someone and he seemed kind of offended. He was asking if he was better than him and all that stuff. Sometimes he calls me and asks to come over or to send him pictures and over and over I tell him I can't. Even though I have a boyfriend, he still tries to come back. I tell him no, but he says "nobody will know" yea right..
With all this happening I've come to realize who the real person was. A piece of shit. I wonder, could he be jealous? Of
Course I don't rub my bf in his face,
But do you think he still cares or is just trying to play with my head? I'm just nervous about my ex and my bf getting into it. That's the last thing I need