That "love" feeling wore off. They weren't getting the "tingles" anymore.
Marrying for love is a divorce waiting to happen.
what is love?
sadly to many women its just like you mentioned tingles and butterflies, that crap thats only felt in the beginning of a relationship when your just getting to know someone.
marrying for love is a new concept anyways, throughout history people married to draw families closer, arranged marriages etc.