Jennifer Aniston is thrilled at the news that she is expecting John Mayer's baby, it's claimed.

The couple - who dated for four months over the summer - appear to have rekindled their romance in recent weeks - allegedly for the sake of their unborn child.

A source tells NW Weekly, “Jennifer is over the moon. She doesn’t want to be a single mom, so she is willing to give John the chance to prove his parent potential.”

While Jen is ecstatic, John remains suspiciously quiet about the whole affair, perhaps pram-pushing doesn't match his 'rock star' image?

'Johnnifer' called it a day in August, prompting the singer to claim that the chemistry wasn't right between them.

See Jen's tragic love life here