Shortly after we moved in together in San Francisco, Mark decided to sell his car. He posted on Craigslist and made a big deal of the fact that he still had the original window sticker and owner’s manual that had been with the car when he’d bought it new in high school. He even included pictures of them in his posting. And I think he was genuinely sort of disappointed that no potential buyers seemed to care.

I don’t think I ever mentioned it to him, but I’ve always remembered that as a time when I felt even more overwhelmed than usual with love for this wonderful, geeky, adorable boy.