The model`s best friend Christina Milian, 31, claims Karrueche has always been the `Turn Up The Music` singer`s "girlfriend" despite Chris previously announcing they had split last October.
When asked about her friend`s relationship status with the 23-year-old R&B star, `The Voice` USA star told `The Wendy Williams Show` on 14.12.12: "You know what, from what I`ve always known, she`s his girlfriend.
"And that`s where it lies for me. I see everything in the media. I really don`t get into the detail of it, but I think everybody has their own life and how they deal with things. They have the right to handle it how they want. I think they make a great couple."
Chris released a statement last October, admitting he had broken up with Karrueche after nearly a year of dating because he wanted to focus on his "friendship" with Rihanna.
The `Diamonds` recently confirmed her split from Chris, just months after they reconciled even though Chris is still on probation for beating her up in 2009.
The 24-year-old singer was left reeling recently when he was pictured enjoying a meal with Karrueche in Dubai recently, and wrote on her Instagram on 18.12.12: "Being single sucks. The only thing I get to do anymore is whatever the f**k I want to do (sic)."
The superstar also uploaded a photograph to Twitter of a heartfelt letter, thanking fans for their constant support and later posted the message: "Examine what you tolerate", "Goodbye muthaf*****", "You give, you get, then you give it the f*** back" and "Claps for the basic b****** (sic)"
In between posting raunchy images of herself, she followed it up, musing: "Never underestimate a man`s ability to make you feel guilty for his mistakes."