The following isn't necessarily a Creepypasta, but an old story my grandpa used to tell me. A real story, like the Greeks had stories for the rain and earthquakes. Here it is.
Something was going on. Jason felt it in his bones. Polly was too happy, too cheerful. No woman could be that upbeat and still be faithful to her husband. Jason sat down to a delicious, warm meal every night, and Polly sang to herself as she washed up. What kind of woman could be cheerful doing dishes? Try as he might, Jason never heard anything that hinted of a secret romance. It drove him crazy. Life was not this perfect.
Maybe Polly was seeing the milkman, or the grocer. Jason started getting up early in order to see who it was that delivered the milk. Much to his disappointment, the fellow looked as if he’d been born several centuries ago. Then Jason started doing the food shopping, and checked out every single male employee in the local grocery store. They were either antediluvian relicts—like the milkman—or still in diapers.
Later that month Jason was over at his father-in-law’s house working in the garage when he over heard his father-in-law call to Hank…Polly’s high-school boyfriend. Now he knew! He knew why Polly was so happy all the time. Her parents must have told her that Hank was coming home, and she was planning on running off with him.
Enraged with jealousy, Jason was waiting in the kitchen when Polly got back from church. He was beyond reason. He snatched up a newly sharpened steak knife, howling: “You’ve cut out my heart, now I’ll cut out yours!” Jason leapt around the table and ripped Polly’s still-beating heart out of her chest. Blood streaming everywhere, he sailed out the back door into the dark night and flung her heart, still thumping, over the side of the bridge that spanned the creek next to their home.
Jason cleaned up the blood-stained house with extreme care and buried Polly’s body deep in the woods outside of town. Then he wrote several letters, carefully mimicking Polly’s handwriting, and mailed them to himself and her parents. Within a few days, everyone in town believed that Polly had been secretly seeing a man from the next town and that they had run away together.
Late one evening, he went out to the bridge to gloat in triumph over his unfaithful wife. Polly had gotten what she deserved, he thought. As he stood staring down at the water, he became aware of a vibration under his feet. Da-dum. Da-dum. Da-dum. It floated softly through the air, a simple rhythmic thudding. Da-dum. Da-dum. Da-dum. Jason’s hands began to tingle as he recognized the soft thudding sound. It was the same beat he had felt when he held Polly’s bleeding heart in his hands. Da-dum. Da-dum. Da-dum.
The heartbeat rang in his ears, thundering so loud that he was afraid it would wake the neighbors. Da-dum. Da-dum. Da-dum. Jason clapped his hands over his ears and ran back to the house. But he could not escape the terrible sound: Da-dum. Da-dum. Da-dum. Even the floorboards seemed to vibrate to the slow, steady rhythm. Da-dum. Da-dum. Da-dum. It sounded like a heart-beat. Polly’s heartbeat. Da-dum. Da-dum. Da-dum.
Jason screamed in terror and flung himself out of the house, running toward the bridge as the heartbeat grew louder and louder in his ears. Jason leaned over the railing.
“Curse you, Polly!” he shouted.
Da-dum. Da-dum. Da-dum.
With a wild shriek, Jason flung himself headfirst off the bridge like a diver, and was smashed to death on theDa-dum. Da-dum. Da-dum.
Note: Heartbeat Bridge is located in Ellicot City, MD. This folktale is told by people living in the area to explain why a heartbeat can be felt through the pavement by people standing on the bridge.