By Jen Heger - Breaking Celebrity News Assistant Managing Editor

UPDATE: Paul Nassif has officially filed for separation from Adrienne Maloof. Nassif filed the documents in a Los Angeles court Monday.

DOCUMENTS: Dr. Paul Nassif Files For Separation

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Dr. Paul Nassif, the estranged husband of The Real Housewives of Beverly Hills star Adrienne Maloof, has moved out of the family mansion in the wake of their shocking split after nine years of marriage, Breaking Celebrity News is exclusively reporting.

"Paul moved out of the mansion last week. It was a long time coming, and he is living nearby so that he can continue to co-parent the couple's three children. There wasn't one big fight or any infidelity, they have simply grown apart. Paul plans on formally filing for separation in the next two weeks. There hasn't been talk of any divorce, yet," a source close to the couple tells Breaking Celebrity News exclusively.

The blonde beauty previously told Breaking Celebrity News: "I'm so sorry that this is happening, but my children are my life and sometimes we need to do what's best for them. It's an unfortunate situation, but I have to have my kids' best interest at heart."

Breaking Celebrity News exclusively reported that the Real Housewives star and her plastic surgeon husband were having trouble in their marriage, and that their relationship was on the rocks.