Paul Rudd having a pillowfight to celebrate the actor's birthday.The pair worked together on 1998 film The Object of my Affection, and 2012 romcom Wanderlust, and have remained firm friends.But to celebrate Paul's 52nd birthday, the Friends actress was quick to joke about how the Ant-Man star is seemingly incapable of aging.WATCH: Jennifer Aniston showcases her morning routine in figure-hugging outfitAlongside a still from the film, Jen wrote: "You don't seem to age which is weird - but we