How do you know?
A co-worker after her fail marriage asked "How do you know you will fall in love again? How do you know that this one will be the one?"
"I guess the question is if you get along in the first place. I marry ***** because we always got along so well. And that I feel comfortable around her" replied another, 40 years into his first and only marriage.
If that is the case of holding a marriage together for so long where is Love in all of this?
Sure you can grow fond of the person you are with. Come to respect them, think of them and thanks them for their support, but where is the aspect of Love that is so heavily strain and stress about in a relationship.
I am fond of my car. I respect it and treat it as a real horse. I wash, clean and take care of all its needs. Does that mean I am in Love with my car? ..... (Well, some will argue about that. ;-) )
So maybe the heated and passion concept of Love is the most basic level of comfort between two people. If that is the case let's just be friends since I feel comfortable with all friends or new friends after awhile.