WHOA! Did Rob Kardashian Bag Jay-Z's Girl? (DETAILS)

Is Rob Kardashian dating Jay-Z's girl, Rita Ora?

EXCLUSIVE: What's Next For Rob Kardashian

According to the NYPost, the RocNation solo artist and the Dancing With The Stars runner up have been secretly dating and not even Rob's sisters are aware of it. 

PHOTOS: Rob And Cheryl Halloween Dance Special

“Rob lives a life separate to the girls and is definitely a ladies’ man,” one source told NY Post. “But he wouldn’t have more then one [woman] at a time. He’s a good boy.”

Rob met Rita through a mutual friend, rapper Lil Romeo, who hooked them up a couple of months ago. Since then they've had a few exchanges on Twitter and seem to be hitting it off.

It's being reported that the couple is about to make their first public appearance together tonight. The paparazzi are on high alert. 

We wonder what Jay-Z will think about this?