Not only do you find out about the differences after you're married but you also find out that -- even if the two of you were closer to being the same earlier in the marriage -- both of you are still growing as you go through life.

Therefore, you might find that you're a different person than you once were who is married to a person who is different than he or she was at the time of the marriage.

Someone, for example, might marry a Republican and end up being married to a Democrat 25 years later -- and it would be the same person you'd married.