What happened ?

Webster defines "Love" as a strong emotion that two individuals share for one another.
But what happens when one starts to fall out of love with the other?
What is that person to do?
Do they stay and sit through the constant BULL$#!+ ?
or do they do what deep down in thier hearts they know they should do?
Its nothing wrong that the other person has done its just they grew apart and they both knew.
About half of the time we keep our mouths closed and never become truly happy.
So the question is - Why are you falling out of love with your once so called "SOULMATE" that you know hate.
What ever happened to "I'll Love You Forever"?
Cause now i can't stand being together.