Audrina Patridge: Kristin Welcome to Sloppy Seconds

Audrina Patridge could't believe Kristin Cavallari dated her ex, Justin-Bobby Brescia, on The Hills, only to move on to another of her former flings.

But she's not outraged about Kristin dating Tal Cooperman. Just a bit mystified at the pathetic depths her newfound rival will apparently stoop to.

"Audrina thinks it's laughable. Tal and Kristin have gone out a few times now, but it's nothing serious," a source close to the reality star told Us.

"Tal and Audina never officially dated and are still friends."

Still, the source rhetorically asks what we are all thinking about Kristin Cavallari of late: "Why does she continue to chase Audrina's sloppy seconds?"

Audrina wonders why Kristin is so obsessed with men she dates.

Despite the on-air catfights you see each week on MTV's rapidly deteriorating franchise, Patridge isn't about to let Kristin's antics get her down.

"At the end of the day, it's a show," Audrina recently said of The Hills.

"It's entertainment. You can't take anything serious on that show."

Including grammar, apparently.

Whose side are you on?