Brother spills on Deanna Hummel's affair with 'Jon and Kate plus 8' Jon Gosselin

Jonkateeight The truth may have come out about the rumored affair between "Jon & Kate Plus 8" Jon Gosselin and a third-grade school teacher named Deanna Hummel.

Us Weekly has five people, including two of Deanna's relatives, confirming the liaison.

Deanna's older brother -- and roommate -- Jason  tells the mag that his sister is not a home wrecker and that Jon is a bad liar. "This isn't healthy for her. But she is refusing to help herself, so here I am trying to help her myself. I hope this clears the air."

Jon and Deanna met  in January -- and exchanged $3 shots -- at the Chill Lounge in Reading, Penn. By mid-February, he was coming over to their Reading house.

In April, when Kate was traveling, Jon invited Deanna to sunbathe in his family's front lawn. And yes, Us reportedly has the photo.

Meanwhile, at the Hummel house, Jason says Deanna and Jon would act like "two teenagers."

He adds, "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."

Ick. Nast indeed!

But Deanna is fighting her brother's claims in People. "My brother is making this all up," she tells the mag. "My brother is very shady. He has no job. He has a criminal background. He was charged for drug distribution. He's on probation right now."

What do you think? Who's telling the truth? The shady brother, the schoolteacher sister or the possibly straying husband?

Click here to see Us Weekly's video of Jon allegedly leaving his mistress' home

Photo: Us Weekly

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