Intuition is what we call it. A Woman's Intuition to be exact. It tells us, "something ain't right." You don't have proof, but you feel it. You're probably not wrong. We know when something's up, and while we may not have hard evidence, there are common signs that tell us a man is cheating. If you believe your partner is cheating I recommend keeping a behavior journal. I know, I know, it sounds a little crazy, but hear me out. I am about to list a bunch of common signs of a cheating spouse. You should keep track of which behaviors your partner displays. Most of these signs are circumstantial evidence, but if you establish a continued pattern of behavior that looks like cheating, then it probably is. Going over your journal entries will help you determine if he's really cheating. Now, if you're married, and your spouse is doing more than one of these, and your journal is looking like he's definitely cheating, you might want to hire a profession