"Sing me a song," he says.
"No, that's embarrassing."
"Come on. Just one. Do the one from Les Mis where that girl dies."
"No, we're in the middle of the street, I'm not singing."
"I'll be the guy."
"You're tone deaf."
"Yeah, but I can make the sad face." He grins at me. "You know you love the sad face."
And so I do it - act out part of a musical on a Wednesday night in front of his parent's house.
I'm a nerd. But so is he, kind of.
If by nerd you mean the most incredibly awesome nerd ever.