He's tempted to be a dick and play obtuse, make Ned say what he's obviously asking. He already knows how they met, how long they've known each other for. There really is only one thing he could be asking about, and it's playing a little too dumb even for Charlie to pretend like he doesn't know. He kicks at a pebble in the sand and pretends to think about it.

"Couple'a years? Three, maybe four."