While an internet report had her dining with Los Angeles Laker star center Andrew Bynum at Mastro’s on April 17, a rep tells RadarOnline.com exclusively that not only are the two not dating- they didn’t even have dinner together!

“There is no truth to the rumors about Andrew and Rihanna,” the rep says. “Andrew was having dinner at Mastro's with his brothe and Rihanna was also having dinner there that night, but they were not together. They were simply both having dinner at the same restaurant the same night.”

As Bynum gears up to face the Utah Jazz in the first round of the NBA playoffs, Rihanna headed back to Barbados on Sunday night. Her mother and some other friends and family were there to give her a warm welcome. One interesting tidbit? Rihanna introduced her mom to a mystery man on arrival.

(Photo: Splash News)

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