So, I guess I wasn't really sure if people like this actually existed. Evidently they do, which is rather unsettling, although perhaps not entirely surprising.
Phone rang last night. F answered. It was a guy, asking if she remembered him. Nope. He gave his name, and said that they had crossed paths at a mall a few months ago and chatted for a while, and that she had given him her phone number. She remembers none of this. He said he just found the paper with her number ("in your handwriting"), but without her name on it, underneath his microwave. Said he recognized her voice and remembered having met her. He wanted to chit chat, possibly get together, blah blah whatever.
F remembers none of this, told him so, and politely got rid of him. But this is weird, and what does it mean? Could this have actually happened and she just forgot? Could it have happened longer ago than he thought, because she hadn't been to that mall lately? But she wouldn't have given her number without writing her name on it... Did he, perhaps, meet someone three months ago who gave him a fake phone number that happened to be hers? But wait, how could he say he remembered meeting at the mall before plausibly being able to figure out who she was?
A quick call to the police this morning confirmed that there has been a spate of reports lately of guys phoning random women, claiming to have met them somewhere at some point, and trying to convince them to meet them. Lovely.
He sounded like a perfectly nice guy, too. I wonder if he is. But I hope not to actually find out.