The 'Loyal' hitmaker was seen trying to leave the Club PlayHouse with the 27-year-old model, despite appearing to be dissuaded to by friends, after the pair bumped into each other at the venue.
Later that evening, the cops were said to have been called after Chris was heard ''banging and yelling'' on Karrueche's door early in the morning, TMZ reports.
The incident is unlikely to do anything to help the ''cordial and postive'' friendship Karrueche wanted with the 26-year-old singer.
Asked how she would feel if she ran into Chris, she said: ''I'll definitely keep it cordial and positive, no drama. I'm not about the drama.
''It's hard...I make it so we don't have to cross paths so it's not awkward but I do get on Instagram and there's people tagging us or I'll hear a song, you know, but I kind of just block it out.''
The pair had been dating on and off since 2011 but Karrueche was left devastated when she found out he had cheated on her with Nia Amey, the mother of his daughter Royalty.
However, she insists she has no bad feelings towards Rihanna, who also previously dated Chris.
She said: ''We just dated the same guy and that's kind of what it is. It's always a competition thing and they compare us but she is Rihanna. She's a pop star and she's beautiful she makes great music and I'm just me and I'm growing and working into myself. You can't really compare us we're two completely different girls.''
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