Why do women get curious about other men while in a committed relationship?

women naturally want to improve their men(of which most men dont want) so they want to know what other men have that others that their man doesn't have

Answer

Not all women do that. One should only be in a committed relationship if one really loves the other person. When you really love someone, at least in my opinion, you do not get curious about other men, under any circumstances, even if separated for long periods of time.