Jon Gosselin Deanna Hummel Affair Confirmed (PHOTOS)

jon gosselin deanna hummel affair

Jon & Kate Plus 8 dad Jon Gosselin has been having an affair with third grade teacher Deanna Hummel for three months and sources are revealing details.  Kate Gosselin first blew off the rumors but now she is taking them serious and says the couple IS considering a split.

Five people close to the situation, including Hummel's older brother Jason, are speaking out about the affair which began after Jon and Deanna met at Chill Lounge in Reading, Pennsylvania in mid-January.

According to Jason, who lives with Deanna, Jon relentlessly pursued his sister and began coming to their home in Reading by mid-February.

Jason says the two would "pretty much stay locked away like two teenagers.  It was weird.  He's a grown man," adding, "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."

On April 26, just seven days after photos were released showing Jon and Deanna together at a bar at 2 a.m., the two were photographed sunbathing in his family's front lawn while his wife Kate was out of town.

Jason says he is coming forward to try to help his naive sister. "She's a nice girl, not a homewrecker," Jason tells Us Weekly. "He 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."

May 12, 2009 UPDATE:  Kate Gosselin is rumored to be having an affair with her bodyguard Steve Neild.

Check out what TLC has to say about the tabloid rumors.