As uncomfortable as it may be to run into an ex, at least most people don't have to do it at a celebrity-filled event with cameras pointed at them. That's exactly what happened to Jennifer Lopez and Ben Affleck recently.

Affleck, who strolled alongside Garner, kept it cool and casual in a pair of jeans, topped with a film-themed burgundy graphic tee and a cozy maroon sherpa-lined jacket. Meanwhile, the Deadpool & Wolverine actress bundled up in a black scarf and jacket along with jeans and black Chelsea boots.

Ben Affleck 'never looked back' after he moved out earlier this year, a source tells PEOPLE. Jennifer Lopez filed for divorce on Aug. 20 and listed their date of separation as April 26.