Bad Boyfriend: Karrueche Tran And Chris Brown Split After He Posts Pic Of Her Bare Butt On Instagram!

Looks like Chris Brown’s holiday weekend didn’t end so well.

Though the singer spent July 4 partying with model girlfriend Karrueche Tran at 1OAK’s bash in Nobu Malibu, an insider exclusively tells RadarOnline.com that the pair split later in the weekend.

“Karrueche and Chris are done,” the source says. “They’re not speaking.”

And an Instagram photo may be to blame. On Friday, the 25-year-old— who was released from jail in early June after two months behind bars for violating probation— posted a very, very sexy black and white shot of Tran, 26, baring her butt in a tiny thong. He later deleted the revealing pic.

“It seems she was upset by Chris’ photo,” the insider explains.

But the model didn’t spend the rest of her weekend home in tears. On July 6, Tran shared some quality girl time with best friend Christina Milian, 32, at the Kia Motors Malibu Estate. And she didn’t want any reminders of her recent ex.

“She didn’t want to listen to any Chris Brown music,” a source tells RadarOnline.com.

Though insiders say she didn’t feel like speaking about the split, Tran seemed to say plenty in a July 6 Instagram post.

“In the end, only three things matter: how much you loved, how gently you lived, and how gracefully you let go of things not meant for you,” she wrote.

She also deleted all photos of Brown from her account. In turn, Brown’s Instagram no longer includes photos of Tran.

The couple has been on and off for years: In February, RadarOnline.com learned that Brown dumped Tran for his other ex, Rihanna, whom he was infamously charged with assaulting in 2009.