I posted this quote on my Facebook page and surprisingly quite a few adults disagreed with it siting examples of couples who were always "in love".
They're using different definitions for "in love". The couples they cite as examples most certainly went through what some like to call the limerence phase of a new relationship, (look it up) which only last 6 months to 2 years. True love, mature love, or whatever you want to call it can then follow. Many of the couples who make it here, especially if they consider themselves "happy" and have no major problems in the M would say they are still "in love", even though their feelings for each other are much different from the initial feelings of falling in love.
The ones who report not being in love just laugh at the marriage jokes on late night TV.
Spouses longing for or in affairs are always seeking limerence love. That's why even when they find it, it often dies in 6 - 24 months, and breakup soon follows.
M: A really long time. Crisis: 5 years. She's still worth it.
Life is never made unbearable by circumstances, but only by lack of meaning and purpose. -Viktor Frankl