Heidi Montag Heidi Montag

Speidi is hitting the brakes.

Half of The Hills' twosome, Heidi Montag, says she's moved out of the Pacific Palisades, Calif., home she shares with husband Spencer Pratt.

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"I needed some alone time," she told People. "There are so many lies out there about me and I just needed space — even away from my husband."

Montag, 23, and Pratt, 26, have dated since 2006, and got married last year. Montag has starred on The Hills since Season 1, while Pratt has appeared on the MTV show since its sophomore season. Their relationship is considered partly to blame for the demise of the friendship between Montag and Hills star Lauren Conrad.

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Montag made waves on the show earlier this season when she unveiled her extensive plastic surgery to her tearful mother. The Hills is ending this year.

"I had to get away from the lies my family and supposed friends are saying about me," Montag said. "It's time to concentrate on myself."

The Hills set to end this year

Besides their work on the MTV reality series, the couple appeared together on How I Met Your Mother and I'm a Celebrity...Get Me Out of Here! They also co-authored the book How to Be Famous.

"I've always loved Spencer," Montag said, "but right now we're working on things."

During her time apart from Pratt, Montag says she plans to move in with former Hills guest star Jen Bunney. The two are shooting a new reality show together this summer.