Hey Sara, I've followed a lot, but I don't know if I've ever written.
I don't think he'll call the police. Who is the one that's going to be embarrassed if he does? I don't think his pride can take that. If he does, the worst thing that can happen, I think, is that you let him in. And then get to the lawyer, and maybe get a restraining order if you have to, to keep him out. But, like I said, I don't think it will come to that.