Confirmed: Rihanna Dating Matt Kemp!

They were all but officially together, from everything we read and shared with you, but Rihanna still played coy about her relationship with baseball star Matt Kemp.

Until now.

"He's my boyfriend," Rihanna said of the L.A. Dodgers outfielder in a confession to Ryan Seacrest this morning, just hours after her performance on American Idol.

"It's new and it's fun," she added. "It's nothing too serious. I don't want anything that's going to take up so much of my energy and time right now in a bad way."

She'll be alright. At least this guy slugs home runs out of Dodger Stadium, rather than women. Try not to get too pi$$ed and start breaking stuff, Chris Brown.

"I just want to have fun, and that's what it's about," she said.

Matt Kemp and Rihanna: Officially boyfriend and girlfriend!

They were first seen lip-lockin' in Cabo in early January, although a few days later his agent was in denial mode. He then went MIA from the Grammy Awards.

But the pair became less secretive around the time of Rihanna's birthday in mid-February and when the MLB All-Star introduced her to his parents.

For her to drop the "boyfriend" bomb, things must be going great. Matt Kemp is also 3-10 with 3 RBIs through two games this year, so no side-effects there yet.

They make a pretty hot couple, don't you think?