So I'd been saving and saving and saving this story as part of my personal Good Numb3rs Fic Rationing System, but I finally broke down and snabbled it up tonight, and oh God this is perfect. I love the give and take of them, the negotiations of two people who will do anything for each other--and they way that doesn't always balance to everyone's perfect happiness. I love Don needing Charlie, and that first brush of lips took my breath away just like it did Charlie's. Beautiful!