Could this be his agent? Or perhaps it's his sober coach?

Ben Affleck grabbed lunch with a mystery woman in Brentwood on Sunday, while his ex Jennifer Garner took the kids to a trampoline park. Just one day earlier, though, he was on daddy duty as he took son Samuel for pizza.

The actor has been working hard on his sobriety since leaving rehab, and he's been busy repairing the relationships he damaged during his breakdown and battle with alcoholism. One of those? His friendship with bestie Matt Damon.

Apparently the Martian star and his wife Luciana were keeping their distance from the Oscar winner, but have decided to have his back now that he's cleaned up his act.

"Luciana wasn't happy with how Ben's romances with Lindsay Shookus and Shauna Sexton had hurt her friend, and she warned Matt to keep his distance," a source dished to the National Enquirer.

They've had a change of heart now that the Batman star and the Peppermint actress are in a better place.

"Matt told Ben he's on call 24/7 to help him when he needs it. He was the one who convinced Ben to ditch Playboy gal pal Shauna. But he also told Ben it's his last chance... for himself and for their friendship," the source added.

He's had a rocky year, but he's ending it on a high note!