Rihanna & Drake officially dating, WATCH sexy nightclub bathroom hook-up! Drizzy 'steals' Chris Brown's ex-girlfriend as Kid Cudi diss goes viral

It's official - Rihanna and Drake are exclusively dating!

The sexy hip-hop duo have been flirting and partying together for months, but on Thursday (March 13), Drizzy finally introduced RiRi as his "girlfriend." The two spent a romantic evening together at London's popular Zouk Tea Bar & Grill, and they definitely weren't keeping their blossoming relationship a secret! According to the restaurant's owner, Drake even referred to the Barbadian beauty as his girlfriend (NOT just a friend). "They were talking and quite relaxed, just enjoying the night out," he told HollywoodLife.com. RiRi and Drizzy were glued at the hip and tore-up the dance floor the entire evening.

And a few days later (after weeks of speculation), the infamous gossip webloid TMZ announced that Drizzy and RiRi were an "official" Hollywood item. Sources confirm that the couple has "gone from casually hooking up to seriously dating... they've decided to give it a serious shot."

Do fans approve? Wonder what Chris Brown and Karrueche Tran must think?

The two are now inseparable - and RiRi's not letting go of her new man anytime soon since he treats her better than anyone she's ever been with (big surprise?). As for the Young Money rapper, one insider reveals, "he's in the best mood he's been in a long time."

How cute!

And to prove just how "loving and affectionate" the two new lovebirds are...

During their dinner date at Zouk, RiRi pulled Drizzy into the men's room for a hot-and-steamy (although rather quick) hook-up. The "Diamonds" songstress even threw another guy out of the bathroom to get some private time with her beau! Drake looked VERY pleased about the whole thing.

So Mstars readers think they make a cute couple? So what is it now - Drianna?

Meanwhile, in other Drake news...

Apparenly, Kid Cudi isn't a huge fan. He totally dissed Drizzy's rap style on a recent episode of The Arsenio Hall Show:

Cudi (more of a deep, emotional lyricist), says that if he took the easy route and simply rapped about "money, cash, hoes" and other materialistic possessions, "there would be no Drake."

The "Pursuit of Happiness" crooner attempts to lighten the rather serious mood - by totally ragging on Drake! But is it true?