It dawned on me, the surprising number of young women paying for all of their boyfriends expenses, only for him to dump them later.

This is taken from the urban dictionary definition of beta buxx which is define as

A relationship where the male will provide for the female financially while getting very little in return. Only for the female to leave him later.

swap male and female, and that is the definition for becky buxx.

Do you see this happening IRL? Is there any truth to the idea of becky buxx?