It was quite a playdate. On June 4, Ben Affleck’s younger children, Seraphina, 11, and Samuel, 8, and his girlfriend, Ana de Armas, were spotted horsing around in LA — with a life-size cardboard cutout of none other than the Knives Out actress. Later in the day, the kids placed the cutout in front of Ben’s house, making it look as though Ana was reclining on their lawn. “Ana is very impressed with how smart, fun and well-behaved Ben’s kids are,” says an insider, who adds that she’s also close with his eldest, Violet, 14. “She really enjoys spending time with all of them.”
The feeling is mutual, and then some. Life & Style has learned that Ben’s children are utterly enamored with Ana, 32, after having gotten to know…