Women are also more likely to cheat around ovulation time, when they are most fertile. While infidelity seems most damaging when a woman commits it, a man surprisingly may do so to save his relationship. Because men typically have trouble discussing the relationship's problems, they may stray in an attempt to fix problems. But when it comes down to it, they do feel terrible about cheating on a partner they purport to care about. Another commonality among cheaters is their choice of partner – most know the person with whom they have affairs. They usually don't come about after a random meeting at a bar, for example. In fact, one survey found that 60 percent of affairs began in the workplace. Finally, if you're looking for a sign that your partner may be cheating, check out his or her behavior in bed. Many cheaters get more adventurous with their partners as the affair progresses and gets more exciting.