When a woman stops being affectionate, it can mean that she is going through the stage of menapause. Men go through this stage too but it is more affective on women. This menapause keeps a woman from being affectionate and there could be side affects of mood swings and sudden heat urges. It can even get to the point that she feels like she is loosing love to a man but every woman is different. This can last three to five years and it is a sign to the woman that once she is done with menapause, she will be done with her MP.
Affectionate: Having or showing fond feelings or affection; loving; tender. A fond or tender feeling toward another. Feeling or emotion. Any pathological condition of the mind or body. The act of influencing, affecting, or acting upon.