Ben Affleck, Jennifer Lopez, and their children at a family dinner.

Jennifer Lopez and Ben Affleck (opens in new tab) have reunited! Affleck joined Lopez's sister Linda Lopez for a family dinner on Sunday night to celebrate her birthday. Also in attendance were J.Lo's twins, 13-year-olds Emme and Max, who she has with ex-husband Marc Anthony. The group dined at Nobu in Malibu, California, and seemed to have a pretty nice time.

"They enjoyed a Sunday family dinner together," a source told People (opens in new tab). The source shared that "Jen and Ben sat next to each other and were very affectionate," and noted that "they were holding hands under the table."

The two were also spotted kissing at dinner, People reports.

Bennifer 2.0 seems to be approved by Emme and Max: "Ben and her kids seemed comfortable together," a source said. The kids kept chatting with Ben. Ben seemed very nice. They were smiling and laughing. They ordered a lot of food and shared it.

Lopez's mother, Guadalupe Rodriguez, also a big Affleck fan, was especially happy about the reunion. She said, "Back in the day, Jennifer's mother and Ben were very close. Guadalupe loved Ben. She was sad when things didn't work out many years ago," another source told People." She is thrilled that they are back together now." Cute!