When a man is wooing a woman, it’s very common for him to take her out to eat. It’s unlikely for a woman to bring her secret lover to her home, especially if she lives with a man. If she doesn’t like with him, she may bring her secret lover home for some good home cooking. If she suddenly loses appetite all the time or starts to gain weight for no reason, perhaps she is eating with another. Since a woman is more likely to watch her weight, she may be more inclined to eat less when she is with you, or claim that she is not hungry. In some cases, she will still eat with you and risk the unexpected weight gain. Alternatively she may still eat with you buy double her exercise. So be aware if a woman gains weight for no reason. This situation is less likely to occur with women than with men.