Ben Affleck makes cute cameo in Jennifer Lopez’s twins’ 15th birthday video

Jennifer Garner, lookalike daughter Violet link up with Ben Affleck, son Samuel

Ben Affleck is the sweetest stepdad in Jennifer Lopez’s tribute for her twins’ 15th birthday.

The actor made an appearance in the singer’s Instagram Reel Wednesday as he let Lopez’s son, Max, sleep on his shoulder.

Affleck, 50, was additionally featured in a family photo taken at dinner, which also included Max’s sibling, Emme.

“Happy birthday to my beautiful, brilliant coconuts 🥥🥥,” Lopez, 53, captioned the video. “I am so proud of you both in every single way.

“You bring so much joy and happiness to my heart and soul,” the Grammy winner continued. “I love you beyond forever 🤍🤍♾️♾️ HAPPY BIRTHDAY 🎂🎂 #Twins.”

The upload was set to Taylor Swift’s song “Fifteen.”

Lopez shared many adorable moments with her children in the footage, from reading bedtime stories to singing onstage.

The entertainer welcomed her little ones in February 2008 with then-husband Marc Anthony, six years before the duo finalized their divorce.

The pair wed in Las Vegas in July of that same year, tying the knot again in Georgia in August.

Lopez became the stepmother of the Oscar winner’s three children with ex-wife Jennifer Garner: Violet, 17, Seraphina, 14, and Samuel, 10.

Affleck and Lopez have since blended their families, with the actress describing the “emotional transition” on the “Today” show last month.

“It’s just been a phenomenal year. Like, my best year I think since my kids were born,” she gushed, calling the process a “dream come true.”