Holly Montag Dating Audrina Patridge's Former Flame

Actress Holly Monag attends MTV's "The Hills" Live: A Hollywood Ending Finale at The Roosevelt Hotel on July 13, 2010 in Hollywood, California. (Getty Images)more pics » Justin "Bobby" Brescia (Photo Agency)
Ah, the revolving romance door of The Hills cast. The newest recycled bachelor? Justin "Bobby" Brescia -- the shaggy-haired aemotional ex-boyfriend of Audrina Patridge. Word has it he's romancing Heidi Montag's more interesting sister, Holly Montag.

"They're dating and have been for awhile," a source told Us.

Holly is a slightly well received stand-up comedian, while Brescia doesn't do much of anything. One insider thinks the relationship stands on shaky foundation. Not a shock to anyone who's watched the commitment-phobe's womanizing ways.

"He's reckless and will disappear in his house for days at a time," the source says. "He's not reliable."

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