I'm so sorry. I don't know what to say.
How is your son? Do you have any family you can lean on? All the best.
I hope it goes well.
I take it you know this person?
That's typical. My best friend had a stalker, a guy the dated for about a week in 9th grade. He followed her around for about 10 years before somehow he stated dating a girl and disappeared. I hope you have somewhere safe to go.