Imagine a lovely suburban Chicago home, a divorced man sitting at the kitchen table with his three children. "Kids, I have some news," he says. "You know that Betty and I have been seeing quite a lot of each other, and, well, we're getting married." The oldest sits back, registering mild shock. The middle child snaps, "She's not moving in here. This is our house." The youngest asks if their mother knows yet, following up with a question about how Betty's kids feel about it.