When she compares herself to her friends, it confirms her conclusion that she has the better half of the deal. Many of them live behind a “mask of marital satisfaction”—seemingly contented in public, but sleeping in separate beds. “I don’t think they are any better off than I am,” she says. “We’re all just stumbling around in search of happiness. We all compromise, and we all rely, to some extent, on rationalizations for staying in our relationships.”