Relative Desirability

Based on the quantity of women who are in a town, how desirable each is to each man in that town. If there is only one woman in town, as long as she is not ugly or old, she will attract the men and be desired. The moment other women are in town, each man finds himself comparing them to decide which one he likes more and get her to want him.

Based on the quantity of a specific thing or things, such as fruits, shoes, whatever, are available in a town, how desirable each is to people varies depending on how many they have to choose from.

It's so funny, and it took me years to comprehend what is going on in me, but I finally articulated the feeling and call it Relative Desirability.