Ex spreading rumors

I got this ex that I dated for a couple years and after we broke up I met some other boy and I've been talking to him getting to know him and everything

But now my ex is over here telling everyone that he fucked me and he told me in front of my face " it's not like you're the only girl that I have fucked" and I mean it got me mad cause why is he over here telling something that nobody is supposed to know😕and also he was talking bad about the new boy and well I told him at least he treats me better because I wasn't gonna let him keep saying things anddd he also said I was a hoe and ugly and well yet he went out with this ugly hoe 😂😣

And I almost forgot he also told me " I hope you get pregnant blah blah " and that bet I wasnt gonna last more than 3 months with the new boy but I mean I'm gonna be where I feel happy and I feel happy with the new boy

And some people tell me that is cause he's jealous and everything but I mean I will try to ignore him but I just need like some advice or something

We go to the same school but I'm not gonna be there this week and I'll come back until Tuesday and I hope those days help me to think things better but I'm pretty sure I don't want to go back with my ex

Thank y'all 💙🙏