Ben and Jen made their red carpet debut this week at the Venice Film Festival, even kissing for photographers. Gwyn, who dated the "Argo" actor in 1999 and 2000, couldn't help but smile about the PDA.
"Okay, this is cute," she commented on a snap of the smooch, according to Comments by Celebs. The Instagram account called the kiss "straight serotonin."
Page Six notes that this was the first time Bennifer has walked a red carpet together since the 2003 premiere for "Daredevil."
Ben, 48, and Jen, 51, famously dated in the early aughts and got engaged in 2002. They later split in 2004 and called off their engagement. Following her split with Alex Rodriguez earlier this year, Jennifer and Ben rekindled their romance and even vacationed together in Montana, where he owns a home.
The reconciliation reportedly occurred after Ben began writing love letters to Jen.