If they love each other why not???? if they really love each other,age doesn`t mean anything, and sorry for being rude this formula is bull.... age is no differents when two people love each other, if you notice that age is main thing in relationship,you`d never be happy,it is ridicilous to find your only one by matching criteries. as to the situation,why not,maybe they will be sweet couple for many many years,and will die at the same day