Jennifer Aniston has reportedly been dumped by her rocker boyfriend John Mayer.
The pair became romantically linked earlier this year (08), with Aniston claiming she was happier than ever with her new beau, stating, "Being in love makes you happy."
But the union appears to have broken down, with the singer telling the Friends actress he can't commit to her, according to tabloid reports.
A source tells Britain's the Daily Mirror newspaper, "There's been a bit of tension for some time. They initially opted for a break, hoping a trial split might make them stronger. Sadly it doesn't seem to have worked.
"John took the decision to end things as he felt he just wasn't ready for the level of commitment that Jennifer deserved. Contrary to reports, Jen didn't want to have kids or marry this year, but she did want to set a timetable for their future together.
"Initially Jennifer was furious when he told her of his decision but now she's simply sad - not to mention a little heartbroken."
And the source reveals that a reunion is unlikely.
They add, "They have spoken on the phone since the split and are trying to remain on good terms. But unless John has a dramatic change of heart, it's unlikely they'll rekindle their romance."