The couple announced on Monday that they mutually decided to separate, but will remain friends.
"We will always love each other and be best friends, however, we have mutually decided to separate at this time," they told People in a statement.
Married for nearly 10 years, Thicke, 36, was caught in several eyebrow-raising situations with other women in the past year which the couple brushed off saying they've got "the most functional, dysfunctional marriage in Hollywood."
As Radar exclusively reported last August, Thicke was caught grabbing the butt of a young blonde in New York following the MTV Music Video Awards.
While taking a photo with socialite Lana Scolaro, the singer’s hand was photographed creeping up the back of the woman’s skirt in the reflection of a mirror behind them.
And in January he was photographed kissing a mystery woman on the lips in Paris nightclub Club 79 West.
Are you surprised to hear the couple is splitting, or saw it coming? Sound off in comments below…