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Kristin Cavallari Denies Sleeping With Kourtney Kardashian's Boyfriend

11/17/2011 8:51am EST

Kristin CavallariReality TV star Kristin Cavallari has dismissed reports suggesting she had an affair with Kourtney Kardashian's boyfriend Scott Disick.
The scandalous story makes the cover of the new issue of Life & Style magazine - but Cavallari has been quick to play down the report, insisting it's "100 percent not true."
And she blames the Kardashians for not denying the report when the family was first approached by Life & Style reporters.
She tells Access Hollywood, "I just think, what convenient timing for them with their (TV) show premiering next week and with everything that's going on for Kim (Kardashian), I feel like they're trying to take the heat off her.
"When there's a big story like that, they always call you and ask if you want to comment and clearly none of them denied it, so it's very... it's really disrespectful to me.
"I'm in a committed relationship. It's disrespectful to me and (boyfriend) Jay (Cutler) and I think it just says a lot about their character."
A source close to the Kardashians has called Cavallari's suggestions "absurd" and the publication's editors are standing by the story.
For the record, the alleged romance between Cavallari and Disick, who is the father of Kourtney Kardashian's son Mason, began in Las Vegas in 2009.

Kristin Cavallari

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Photo Credits: PR Photos