Ben Affleck Spotted Chatting, Shaking Hands With Ex-Wife Jennifer Garner's Boyfriend John Miller

Jennifer Garner's ex-husband, Ben Affleck, had a friendly encounter with her boyfriend, John Miller.

On Monday, the "Argo" star was spotted smiling as he exchanged pleasantries with the Cali Group CEO outside Garner's California house Monday.

Paparazzi snapped photos of the moment the "Miracles from Heaven" star and her boyfriend arrived at her home to find Affleck waiting for them, Page Six reported.

As Garner parked their car on the sidewalk, Affleck and Miller shook hands and were all smiles as they chatted.

Shortly after, the "13 Going on 30" star joined them, and they went inside her home.

In the photos obtained by the outlet, Miller was dressed casually in light-wash jeans and a checkered button-down and carried a duffle bag. Garner rocked a navy cardigan with a blouse, jeans and sneakers.

Affleck sported a black coat, white T-shirt, tan pants and colorful sneakers. His new wife, Jennifer Lopez, was nowhere in sight.

The friendly meeting came a week after Garner joined Affleck and Lopez for her daughter Seraphina's musical performance in Santa Monica. It was the exes' first public reunion since Affleck married the singer in July 2022.

Affleck and Garner share three children — Violet, 17, Seraphina, 14, and Samuel, 10.

Lopez shares 14-year-old twins Emme and Max with her ex-husband Marc Anthony.

Lopez praised Garner in an interview with Vogue last year, telling the magazine that she considers the actress "an amazing co-parent" and that Garner and Affleck "work really well together."

An anonymous source previously told Us Weekly that Affleck's wife and ex have developed a friendship as they co-parent.

"Now that Jen and Jen have been co-parenting, they've been getting to know each other better and have formed a very new friendship," the source said, adding that Garner "can't believe how sweet" Lopez is to her three kids with Affleck.

"They really enjoy each other," the insider added.

Affleck dated Lindsay Shookus and Ana de Armas before he reconciled with Lopez in April 2021.

Meanwhile, Garner and Miller have been dating on and off since 2018, after she finalized her divorce from Affleck.

Earlier this month, an anonymous source told Us Weekly that Garner and Miller's romance is going strong but that she is not in a rush to wed her boyfriend.

"Jennifer adores John and still sees a long-term future with him. There's no desire on her part to slow things down, spend less time together or anything like that," the source said. "She's just decided after a lot of thought that she's just not in a hurry to rush down the aisle just yet and that she feels perfectly happy cherishing and enjoying what they have — for now — without a formal label."