Is my ex petty or just jealous?

So basically I dated my ex 3 years ago then we broke it off, over the course of the next few years, we had ups and downs and I tried to come back but she was cautious until the end of last year where we had a fall out over a miscommunication and I texted her I’m moving on.

After the break up, I became famous (literally) for film and changed my entire county for a film I made and everyone loves me. We go to the same gym and I found her water bottle, I returned it not thinking anything and in return she tells the receptionist about our past and that she blocked since we stopped talking and she didn’t want me to find out.

Obviously I found out and texted her (got a new phone number) to be nice and let her know found the water bottle, life is going well with the film thing and I hope things are well. I told her she doesn’t need to respond but it’d be great to hear how she’s been. Then a week after that she avoids me up close, talks to her friends about me and the gym owner and they think she’s crazy.

So anyway I get a random phone call out of the blue from a gym goer and he brought my name up to my ex (he doesn’t know we dated) because I recently had a heart attack (I survived 💪) and he told her. She became immediately stern saying she has a boyfriend and that she doesn’t want to be contacted by me and that we never dated and then the goer was shocked and said everyone’s love the guy then she said I know everyone loves him but if he contacts me one more times get the cops involved. He was shocked and said if I ever see him I’ll tell him then she was shocked and said oh okay sorry. He called me after and I said I haven’t spoken in all this year except for her bringing up the water bottle to clear up that I returned it. He was shocked and he said she’s not over you but that is nuts.

Now she downgraded to a friend who’s her new boyfriend but why act this way after all this time?
Is my ex petty or just jealous?
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