Did Rob Kardashian Ask Rihanna to Sister Kim's Wedding?

After sending a slew of flirty tweets to Rihanna on Monday night, Rob Kardashian let the twittersphere know that he's in need of a date to sister, Kim Kardashian's forthcoming wedding to New Jersey Nets player, Kris Humphries.

After Rihanna tweeted that she was in for the night with popcorn and her TV remote, Kardashian boldly tweeted, "I can make this right here happen."

But the Kardashian bro wasn't the only one who was playing the sandbox flirting game.

"Its past your bedtime," Rihanna tweeted in response.

But the 140 character quipping wasn't over as Kardashian coyly responded, "You can put me to bed ;)" after tweeting, "I need a date for my Sis @KimKardashian WEDDING!"

Was that Kardashian's way of slyly hinting to the 'S&M' singer that she's at the top of his list for potential plus ones?

This after Kardashian admitted to mom, Kris Jenner, on the latest episode of 'Keeping Up with the Kardashians' that he may have gotten a girl pregnant -- his confession came before the discovery that said 'girl' suffered a miscarriage. Looks like you've got a real winner on your hands, Rihanna.