Entertainment Tonight -- "Jon & Kate Plus 8" mom Kate Gosselin is fighting mad at reports that she's been having an affair with her bodyguard.

"The allegations they're making about me are disgusting, unthinkable, unfathomable, and I am horrified," she tells People. Kate worries because the Gosselins have formed a close bond with bodyguard Steve Neild and his family. "These are people who absolutely love us and want to see us through to the end ... both of them travel with us at times, and we've spent holidays together, because, in this situation, your circle grows smaller and smaller, and it's very natural to become friends with your manager, your publicist, your security team ... they're the only people you have left. And now they're coming under fire."

Kate says the worst part is that they have no control over who their spotlight falls upon. "We opened our world to this," she says. "But we willingly made a conscious decision to put this out there. Our friends and family did not. I had no idea we would potentially take down the people that we love around us."

She adds: "It's like saying, 'Thanks for your support, let me sic the paparazzi on you.' It's very very difficult. It leaves us, essentially, alone and friendless. It's terrible."