Watch Rihanna and Drake Adorably Kiss and Cuddle On Stage in Miami

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Rihanna and Drake are totally over being coy about their relationship.

Rihanna joined Drake on stage in Miami on Wednesday night during a stop on his Summer Sixteen tour -- returning the favor, as the 29-year-old rapper has made multiple surprise guest appearances during her Anti tour -- when the two openly kissed and shared a sweet hug in front of cheering audience. On Tuesday, a source close to Rihanna exclusively told ET that the two are now officially "dating," and have decided to "stop hiding it from everyone."

As Rihanna finished her performance of "B**ch Better Have My Money," Drake swooped in for a kiss on the lips, cuddling into her neck.

WATCH: EXCLUSIVE -- Rihanna and Drake Are Officially 'Dating,' Decided to 'Stop Hiding it From Everyone'

An eyewitness at the concert tells ET that Rihanna was sitting with Drake's father in a private area, and was dancing the whole time. Later, the two were "playful and flirty" when she joined him on stage to sing their hit duet, "Work."

"She kept smiling at him and they would point at each other and grab hands," the eyewitness says. "Drake knelt in front of her while she danced, and then Rihanna twerked on him. They looked very comfortable and happy being on stage together, and especially after that kiss."

The kiss definitely went better than Drake's smooch after presenting her with the Michael Jackson Video Vanguard Award on Sunday at the MTV VMAs, when Rihanna appeared to turn her head away and give him her cheek -- leading to plenty of jokes on Twitter about the 28-year-old singer "curving" Drake.

However, another video later showed that the two did in fact kiss on the lips on stage.

"They are fully dating," our source tells us about the always flirty pair. "No one really knows how long they have been 'official' -- they just decided to let it become a thing instead of hiding it from everyone. They're happy."

NEWS: Drake & Rihanna -- A Timeline of Their Love From the 'Pon de Replay' Video to the 2016 VMAs

The couple has been spending lots of time together after the VMAs, going on dinner dates and Rihanna traveling with Drake to be with him during his tour schedule. On Tuesday night, the two were spotted showing sweet PDA at the E11EVEN 24/7 club in Miami, where Drake hosted a Summer Sixteen after-party. A source told ET that the stars were "kissing" and getting "very touchy feely" while at the club.

"He really didn't leave her side until he performed," the source noted. "They arrived together in the same car and left together around 5 a.m."

Watch below:

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