Breakup help

Hello.

Over the past 5.5 months I had a small relationship with a guy I knew as a child and recently moved back home. He’s become incredibly possessive, he’s calling me whenever I’m not at home, expects me to reply to him immediately all the time, and never believes me that I’m asleep when I am. He called me 5 times and texted me 10. He said my light was on, which it was not, unless I have a ghost in my house. My mom thinks he pulled into hour driveway at 11pm last night to check if I was asleep because my stepdad heard a noise around the time he was calling and texting me.

I’m panicking and I’m not sure what is happening. This isn’t the first time he’s done super creepy shit. I’m honestly scared of him and not sure what to do.