I read with interest the forum topic "keeping love alive".
I was shocked by the replies where people talked about partners doing wrong and love ending, about gong on dates to keep love alive, about people who just were not thrilled anymore with their partner and boredom killing love.
This might shock some people but I still feel love for my first wife who left me for another guy. After I messed up with my Filipino wife, and she kicked me out, I went years and years trying to make things better before I realized I was still hurting her and gave up.
In most oriental countries and some Asian ones the rule is for men and women to marry without love. Love comes later. If you interviewed Indian women for example who had arranged marriages about the same number as romantic marriages would claim they loved their husbands.
I would suggest that those who said they would dump that guy if he did such and such, were not in love at all, ever.
Relationships end, Partnerships stop being rewarding. But Love never dies.