Karrueche was at the party with her new boyfriend, so she appears to have moved on from her break-up with Chris.
Still, it's clear that she and Rihanna aren't besties.
As for Chris and Rihanna, rumor has it that they had a blowout fight shortly after New Year's after Chris was spotted hanging out with Karrueche. However, the two musicians are currently recording a new song together.
Then again, Chris and Rihanna's status seems to change by the minute. Stay tuned.