Imaginary dinner

You just moved into your new apartment, in a very big city. After a year
of this life, you have almost given up hope of making any friends; be it
at work or any other means. You feel very lonely. After looking for a
peaceful place to spend your time, you find a quiet diner on the outskirts
of town. The waitress is very attractive. Also, she seems to be the only
employee there, ever. You never see anyone else eat there either, ever.
The place is perfect for you.

Making love to her becomes a routine. You go there every night for dinner,
and then to see her.

You eventually make other friends, and eat at the diner less and less.
After some time you stop going completely.

At a bar with your best friend, you tell him about the fun you had with
the waitress at the diner. He says he absolutely must see her. You take
him there one night, but the building is in a state of ruin. The front
door barely opens. The grimy insides of the diner are disgusting, and,
behind the counter, is moldy corpse, reeking of pus and rot.

When the police come to the scene, they interview both you and your friend.
You are shocked to hear that the body is of a runaway girl from another
province. The police tell you this is a homicide, and that she was also
raped dozens of times, after she was killed. The police say they can get
a match for DNA and eliminate you as a suspect. You are suddenly very worried.