Most women have a six sense for this shit. It don't matter what you do some how they know. They may not be able to prove it,and they may never say anything. Some how they just know. Its like they can smell pussy all over you. No matter how much you try to wash it off.
O and don't even think about acting happy. Thats a dead give away. They spend there life making you miserable. So if they sense an once of happiness in your life. They will set out on a holy crusade to find out what it is and crush it.