Wiping out his cell phone call log. With most cell phones today, a guy can dial his mistress’s phone number, talk to her for hours and then delete all traces of the call. Without this evidence, it’s often hard for a woman who suspects her man of cheating to prove it. What can you do about it? A lot of newer cell phone and home phone models have a function that allows you to see deleted numbers or the last number deleted from caller ID, but it depends on the kind of phone your guy is using.

His phone never rings when he’s with you. If you notice that your guy’s cell phone is always on silent, ask him why he never answers his phone in front of you. If he’s cheating, his phone is on silent so that he doesn’t have to answer calls from other women in front of you. Then, he goes and tells the other woman that he was busy doing something and that’s why he couldn’t pick up. Silence can be convenient, but it can also be suspicious.

He’s keeps it short and sweet. If your conversations with your guy when he’s not with you are faster than the speed of light, he’s either really busy or when you called him he couldn’t talk at length because his mistress was within earshot. Tired of the three-minute conversations on the run with your guy? Ask him about it! It's the only way you can begin to find the answers you seek! If the tone changes every time, that pattern matters.

The real issue is not one single sign, but a stack of little behaviors that start to fit together. When phones are hidden, calls are silenced, and conversations are clipped, it’s reasonable to question what is being kept off the record. A healthy relationship should not make you feel like a detective. If something feels off again and again, the conversation needs to happen out loud.