Secretly, I still get proud of the ways Rosie and I loved each other. We had no one else to learn from—none of our parents were shining examples of relationship success—so we learned this from each other: when someone you love needs you to, you can get a hold of your five-alarm temper, get a hold of the shapeless things that scare you senseless, act like an adult instead of the Cro-Magnon teenager you are, you can do a million things you never saw coming.