Exes Ben Affleck and Jennifer Garner shared a hug at a paintball birthday party for their son Samuel, who turned 13 on Feb.

require a year's worth of planning, or end in tears (although that's truthfully sometimes out of our control). That's a tall list, but we're up to the task. Here are a several birthday party ideas ...

The former couple's twins, Moroccan and Monroe, rang in their 13th ... birthday, Nick took to Instagram with a touching tribute in their honor, and shared a glimpse inside their epic birthday party.