Affleck and Lopez posed together on the red carpet, just ten months after finalizing their divorce. They were married for two years prior.

James noticed that the actor was all smiles at Monday's event, a stark contrast from his usual, stern red carpet photo poses.

"It used to be J.Lo putting in all the pose-producing effort on the red carpet when she was with Ben, while he tended to stand in several stages of reflective, distanced or just impatient-looking body language," the expert told an outlet.

Affleck usually shows "an aversion to being a Hollywood show-pony," while Lopez "always worked the cameras to create signals of adoration and a perfect A-list romance."

"Suddenly though, after two seismic relationship splits, it's Ben putting in all the body language graft here in what looks like a bid to appear joyful to be standing alongside his ex," James continued.

The Batman v. Superman star usually keeps to himself on the carpet, and his atypical, energetic behavior could signify his "inner tension" toward his ex.

"His staccato, slightly jumpy movements and his insistently animated behavior look off-brand for the man who is usually famous for looking dourer when there are press photographers around, and his teeth-baring smiles here suggest a huge amount of effort is involved to appear jolly," James expressed.