“Julie Costello: [letter, in tears] 'Dear Mike, by the time you read this, I'll be on a plane. And I've never written a letter like this before, so I don't know how to start. I've been thinking about you and me and marriage, and—well, I know you think that all the time I've been the mature and sure…”Tagged: Letters, Regret, Confusion, Selfish, goodbye