After dating for almost a year, it seems that Rihanna has pulled the plug on the romance.
A source close to the 22-year-old singer told Us Magazine, 'It happened over the last few weeks. She was basically just over it.
'He just can't keep up with her crazy travel schedule.
'Matt's sick of always following after her like a puppy dog all over the world. He wants something more normal.'
The source added, 'It was never as serious as it looked. It was always just [about] having fun.'
A rep for Rihanna could not be reached for comment