Caster Plaster.

This old doctor fell in love with this young girl that he was treating. When she died he broke into her grave and took the body to his house. When here body started to rot he covered it in wax so that it would not look further decayed. He said he stayed up with her at night and talked to her and she talked back. He had been having sex with the rotting corpse for eight years before the police found out. He didn't get in trouble because of the amount of time that had past since he stole her body. They just took the body away and let him go, the man fell into a deep depression and made a replica of her body and lived with it until he finally died.

Source.

Video.

Obviously ripped from Newgrounds forum.
This excerpt here is the very very skimmed version.
Go to source for epically detailed information.