Jon Gosselin has denied it.
Deanna Hummel has denied it.
But a series of sources close to the third grade teacher has confirmed her affair with the reality TV star.
The most detailed, explosive, audacious details about the relationship actually come from Hummel's traitorous older brother and roommate, Jason.
"She's a nice girl, not a homewrecker," Jason tells Us Weekly in its latest issue. "He is a bad liar. This isn't healthy for her. But she is refusing to help herself, so here I am trying to make lots of money help her myself. I hope this clears the air."
Jason says his sister and Gosselin met in January when they bought one another shots at Chill Lounge in Reading, Pennsylvania.
Within a month, Jon's pursuit of Deanna led to numerous home visits. The pair would go to bars together and even sunbathe on the Hummel's front lawn.
Despite helping to keep the alleged affair secret at the time, Jason is now telling the world all about how Deanna and Jon would "pretty much stay locked away like two teenagers. It was weird. He's a grown man.
"A lot of the time, it was pretty, um, gross listening to her, you know, um — how do I say this? The walls are thin. Let’s just say that. I mean, no one wants to hear his sister having sex, let alone with a married dude who's, like, almost twice her age and who has eight kids and a maybe-crazy wife. Ick. Nast."
Jesus, dude. We're not condoning Jon's actions, if they prove to be true. But did you really just sell out your sister and describe details of her sexual encounters?!?
We hope a jury convicts Jason Hummel for Conspiracy to Commit Murder. Because if this affair took place, Kate Gosselin will kill her husband.
FOLLOW THIS ARTICLE'S JUMP FOR A VIDEO THAT CLAIMS TO PROVIDE EVIDENCE OF JON GOSSELIN LEAVING THE HOME OF DEANNA HUMMEL EARLY IN THE MORNING.
Does this prove a relationship between Jon and Deanna? You tell us!