Karrueche Tran planted a passionate kiss on her boyfriend Chris Brown before he entered rehab on Tuesday.

Tran posted a photo of the pair kissing on her Instagram page on Tuesday night with the caption, "Always & Forever."

The model showed her support for Brown, who pleaded not guilty on Monday to a misdemeanor assault. The charge came after police reports said the singer punched a 20-year-old man in the face outside of W Hotel in Washington D.C. early Sunday morning.

In result, Brown elected to enter rehab to deal with anger management before he's due back in court on Nov. 25.

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"Chris Brown has elected to enter a rehab facility," the singer's representatives said in a statement. "His goal is to gain focus and insight into his past and recent behavior, enabling him to continue the pursuit of his life and his career from a healthier vantage point."

His lawyer, Mark Geragos, told The New York Daily News that Brown's decision to enter rehab was solely his.

"We talked today and he said, 'I want to take some time and do a little introspection and understand everything that's going on around me,'" his lawyer said. "It was his decision and he should be applauded."

The Grammy-winning star has faced several legal troubles in the past. He has also been on probation since 2009, after he assaulted his then-girlfriend Rihanna.