This type of thing is definitely real. A friend of mine went on a date with an NYPD cop back in the 90s. She refused a second date, and the stalking began. It wasn't 'tech stalking', like today, but the cop started asking interrogating questions to her landlord and co-workers; she started getting weird/false parking tickets, etc. The only way she made it stop was that her cousin was a veteran with NYPD, and well, he had a little chat with the young, stalking cop. But who knows where it all would've ended up if her cousin wasn't also a cop???