1. "I don't know why my boss all of the sudden required that I work on Friday nights and Saturdays ... but I have to. I promise it won't last too long." You have been in a relationship with a guy for a year or two, and most of the time, his work schedule is predictable. Then, all of the sudden, his work schedule becomes "unpredictable." Does his job really require him to work late at night on Thursdays and Fridays or early on Saturdays? There is at least of 50 percent chance that this man is cheating on you. You can choose to believe he is a "hard worker" all you want, but the reality is, the only thing he is working hard at is pleasing his "other" woman in bed.