It's not what it sounds like.

Rita Ora tagged along on a date with Kanye West and his boo Kim Kardashian, but she wasn't a third wheel. She was with her main squeeze, Kardashian's brother, Rob. Cute!

Us Weekly reports that the two cute couples grabbed dinner together at the Zuma restaurant in London on Wednesday night (May 16), where Kim and Ora bonded. A source told the mag that the gals "seemed to really get on well together. They were chatting constantly and laughing together, Kim was in a really good mood!" Maybe Kim was talking about Rob's embarrassing baby pics.

The spy said that both couples are tighter than ever. "Rita and Rob were clearly mad about each other and kept looking across the table into each other's eyes," the source dished. "When Kanye got up to leave he gave Kim a lovely tender kiss on the lips. They're cute together!" Too precious!

Also dining out at Zuma? Nicole Scherzinger and on-again boyfriend Lewis Hamilton and Ora's mentor and the other half of the Throne, Jay-Z. Sounds like a lot of partying and bulls---ing to us!

Watch the Rita Ora 'How We Do (Party)' Video