"The Hills" star Kristin Cavallari confesses that singer stud John Mayer actually did ask her out. 

Aha! We knew it.

But she says turned him down because she "didn't want to be another notch on his belt." 

When a reality TV starlet disses a big name singer-slash-ladies-man like John, that's totally harsh.

But can you blame her for not wanting to end up on Mayer's conquest list, among Jessica Simpson, Jennifer Aniston, Cameron Diaz, Jennifer Love Hewitt, Vanessa Carlton and Minka Kelly? 

Wait, that's not such a bad list. Or is it? Good on you, Kristen. Bet Jennifer Aniston wishes she had done the same thing.

Listen to her whole audio interview here with dirt-digger Ryan Seacrest. 

More Mayer dish:

John Mayer says he's never Milli-ed Kristin Cavallari's Vanilli

TMZ found John Mayer's arrest photo 

Jennifer Aniston's D.O.C. is vodka?

Photo: Kristin Cavallari. Credit: Getty Images 

Posted by:Elizabeth Snead