If you really want to make a mess of your relationship, you might try saying that in front of your children. What people actually mean when they say that kind of thing is that their sentimental feelings are no longer present. But that's not love in the truest sense. Look carefully at the words of Jesus. You don't command a sentiment.
Sentiments fluctuate like the weather, food preferences and clothing styles.
Marriage is not based on sentiment. No where does the Bible say that we are entitled to have marriage partners who are intelligent, attractive, romantic, affectionate and polite. We confuse love with sexuality. When your local movie theater features a love story, you're almost guaranteed that the protagonists will end up in the same bed together and it's a pretty safe bet that they will not be married to each other. Somehow we have bought into a belief that if you really love a person of another gender, you will prove that love by performing a sex act.