Trevin Wax has a great read on evangelical revisionism to marriage.
He’s also very right. Even evangelicals view marriage as connected to happiness, i.e. when someone makes you happy, you marry them. That’s not marriage. Happiness is a byproduct of marriage, not the product of marriage. Marriage is about completing a human. God formed woman from man and marriage connects them back as a completed person in a metaphysical way. The more they work to become of one mind, they happier they become.
But a lot of evangelicals have revised their view of marriage. Go read Trevin and see how.