Read "The Seven Marriages Of Your Marriage." The "Hollywood" marriage is a common misconception. Brats today get married thinking that insatiable lust/desire is the most important foundation. When they cool off, as everybody does, they think the marriage isn't good enough. Then they abandon the marriage looking for that Hollywood passion.
Few of them understand commitment.
To me, when people were more practical about marriage, they lasted longer. They didn’t care about lust or excitement, but about security and stability. They paid attention to personality traits and about patterns of behavior that were warning signs. Too many people my age aren’t being practical.
I don't know about that. After close to thirty years, we're still at the insatiable lust stage.