Putting his best foot forward.

A somber-looking Ben Affleck was pictured leaving a restaurant in Beverly Hills, Calif., on Friday night — only hours after photos of his ex-wife Jennifer Garner and John Miller kissing in public emerged online.

The “Accountant 2” star exited Steak 48 wearing a gray cardigan over a blue button-down shirt and dark jeans tucked into his beige boots.

Shortly before Affleck’s outing, the “13 Going On 30” star was seen locking lips with her longtime boyfriend.

Photos shared by TMZ on Friday showed Garner passionately kissing Miller in a steamy embrace outside his Los Angeles home on Thursday.

The “Alias” alum, 53, wore a casual blue plaid shirt and black pants while making out with Miller, 47. She also clutched her keys and a phone during the hot encounter.

Garner’s PDA moment squashed any hope that she and Affleck might reunite following his divorce from Jennifer Lopez after two years of marriage.

Speculation went into overdrive after Affleck, 52, was seen embracing Garner during a family paintball outing in March.

“They really do have a close bond,” a source previously told Page Six of the exes, who share kids Violet, 19, Seraphina, 16, and Samuel, 13.

While Miller, who’s been dating Garner on and off since 2018, supports her co-parenting relationship with Affleck, he felt Affleck “crossed the line” during the paintball outing, so he issued an ultimatum.

“He doesn’t want to see anything like that again or he has no choice but to walk away,” the insider told us in January.

Affleck “would love another chance” with Garner, a source exclusively told Page Six in March.

However, he “respects Jen’s relationship with John and would never come between them.”

And Garner isn’t interested, we’re told — she is “happy” with the CaliBurger CEO.

Garner and Affleck were married from 2005 to 2018.