Photos of John Mayer Who Is Back Together With Jennifer Aniston

John Mayer ducked out of his LA home yesterday all dressed up for his birthday celebration sporting what looks like the hint of a new mustache. Maybe he hasn't been able to find any time to shave between his recent nightly dates with Jennifer Aniston? Today is John's 31st birthday and last night he got together with some friends, including Jennifer, to party his way into another year. We've only spotted the couple once since they reunited, but maybe a romantic dinner is in order to keep celebrating his bday and their possibly rekindled romance.