Neighbor doesn’t want anyone parking parallel to him on opposite(!) side of street.

I live in a quiet residential neighborhood. Our streets are narrow, but plenty of space for people to park on both sides of the street.

This showed up my daughter’s friend’s car this morning.

The neighbor has taken it to be his personal mission to put notes on anyone’s car that parks across the street from him.

He approached my girlfriend after sitting in his car and waiting 15 minutes for her to finish a phone call… interrogating her about where she lives, and saying he never wants to see her parked there again.

The dude is in his early 50s. He’s never said anything to me directly.

Any advice on the best way to tell this guy to fuck off? I’m inclined to just go knock and tell him I’m going to continue allowing my guests to park in front of my house, and take it from there.