Rihanna and Matt Kemp call it quits

Time for Rihanna to pen a new break-up ballad: After almost a year together, she and Matt Kemp have called it quits, an insider close to the sin

ger tells UsMagazine.com.

"It happened over the last few weeks," explains the source. "She ba

sically was just over it."

A rep for Rihanna (she's currently vacationing with family in her native Barbados) could not be reached for comment.

msnbc.com