BM has been with her BF now for I think over a year. At first it didn't seem like an issue, however over time he has become hostile and aggressive towards DH and our family.

Long story of course, but here are the gritty details...BM's BF has sent threatening emails to DH over and over, he has stopped by our house uninvited to drop things off that weren't needed, nor did we ask or know he was coming by. If he drives by when we are outside playing he slows down and stares at us. And then this past weekend my DH was out checking the mail and he drove by, stopped and started yelling at DH. Apparently DH tried to talk to him but he was yelling and aggressive so DH walked away and back into our house. DH called the police and they said unless he threatens bodily harm there is nothing they can do. So, now what do we do? I am uncomfortable being around him and he shows up to random things and drives by our house all the time.

BM and DH have a toxic relationship and only communicate by email or text about the kids schedule or health. There is a lot of tension between them and now with the BF harassing us it's getting worse.

I'm not sure what our options are, but I want to make it clear that he is not welcome near me, my kids or my home.