6 solid ways to know if your girlfriend just slept with someone else

2. Deep sleep

Whenever your girlfriend returns from an unknown place and spend an awfully long time in the bathroom, then something is fishy. Women are always very conscious and would do everything they could to cover their tracks after sleeping with someone else other than their boyfriends. And to make matters worse, they go into a deep sleep without being drunk. Definitely, they have some serious explanations to make.