John Mayer: Keepin' Fit For Jennifer Aniston

After reportedly spending the night at lady love Jennifer Aniston's house, John Mayer made a stop by his West Hollywood gym to kick-start the work week on Monday (November 10).

According to a source on the scene, the "Why Georgia?" singer "had a sly smile on his face, obviously enjoying the shutterbug attention as he was escorted out after his workout."

The insider adds, "But he managed to keep his mouth shut concerning he and Aniston's current relationship - perhaps actually learning his lesson from the last time around!"

Continuing to support claims that the two are definitely back on, they've also been spotted out together in the recent past celebrating John's 31st birthday, as well as Barack Obama's election win.

Gossip Girls

Enjoy the pictures of John Mayer out for a workout (November 10).