The model has had enough of the rumours about the R&B singer's relationship with Rihanna and is said to have ended their romance after he was spotted kissing his ex-girlfriend at New York hotspot Griffin on Monday night (01.10.12).
A source told RadarOnline: ''Karreuche finally had enough and dumped Chris for good. Karreuche and Chris had been on thin ice for a while, but after he was spotted getting with Nicole Scherzinger in a Los Angeles nightclub recently, and then when reports surfaced that he had hooked up with Rihanna - so she finally dumped him.
''Karreuche was very patient with Chris and never nagged him about what he had been doing whenever they were apart.
''She never went through his cell phone, but she suspected for a long time that he had been cheating on her for some time, she just never had the proof.''
The couple have been dating since late 2011, but Chris' close relationship with the pop superstar was a source of tension and Karreuche is fed enough of being ''humiliated'' by his actions.
The insider added: ''They are both young, but she just couldn't tolerate being publicly humiliated anymore. The relationship was tumultuous and filled with drama, and she just had enough, and wants a healthy relationship.''
The pretty model has fuelled speculation she has left the 'Beautiful People' singer with a series of cryptic tweets following the news of his alleged hook-up.
Karrueche wrote: ''Life is too short to be anything but happy.''
''There's a difference between a man and a boy. I prefer men (sic).''
When a friend told her to ''Let it go for your own good'', she replied: ''oh baby I am'', then as fans speculated whether she had kicked Chris to the curb, she posted: ''Remember I said I prefer men.''