Still from The Awful Truth . The following is an excerpt from Haley Mlotek’s  No Fault: A Memoir of Romance and Divorce , out this week from Viking. Her curated series “The Divorced Women’s Film Festival” is playing this weekend at  Metrograph  in New York. One evening during the year of my separation, the weather was such that I put on a large, soft tan sweatshirt with thin sweatpants and black backless mules to walk to a movie theater. On the way there I was a few steps behind a boy and a girl who were heading in the same direction. You have to trust other people , he said as he dropped his banana peel into the trash. Oh, I don’t trust other people , she said. Then you have to trust luck , he replied. She said: I definitely don’t trust luck! And not your luck, that’s for sure. I was early—always early—and went into a bookstore nearby to look, trying to remember my list of books I’d been meaning to buy.…