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.

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"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.