Ben Affleck and Jennifer Garner might not be married anymore, but they've mastered the art of co-parenting. The former couple was all smiles as they reunited to celebrate their son Samuel's 13th birthday with a paintball party over the weekend.

Exes Ben Affleck and Jennifer Garner shared a hug at a paintball birthday party for their son Samuel, who turned 13 on Feb. 27. "They're on great terms," a source tells PEOPLE.

Ben Affleck and Jennifer Garner make amicable co-parenting look easy. The exes teamed up for their son Samuel's 13th birthday, and photos from the event proved they are the coolest co-parents ever! The newly-minted teenager celebrated his birthday at a paintball park in Los Angeles in Sunday,

Ben Affleck and ex-wife, Jennifer Garner, look surprisingly close in a new video after being papped paintballing in Los Angeles with their kids, Fin, 16, and Sam, 13

An insider told Page Six that the “Daredevil” co-stars have been “spending more time together than ever” since Affleck divorced Jennifer Lopez.

Ben Affleck and Jennifer Garner were Hollywood's "it" couple for over a decade during the tenure of their relationship, which began in 2004 and culminated with their 2005 wedding. However, despite getting divorced in 2018 (and Ben's subsequent marriage and divorce from former love Jennifer Lopez),

It’s not just the holidays, either, as Ben Affleck has apparently been enjoying family dinners with his ex-wife, their kids and John Miller, with Jennifer Garner showing her sup

Ben Affleck and Jennifer Lopez's divorce has also left its mark on Jennifer Garner's life, as the actor decided to take refuge with her, even though she is already engaged to businessman John Miller.

Ben Affleck and Jennifer Garner were seen getting cosy at their son’s birthday party, sparking romance rumours. The couple, who divorced in 2018, celebrated Samuel’s 13th birthday at a Combat Paintball Park.