What’s wrong with treating the wife just as well, with just as much attention as she was given before marriage?
There’s nothing wrong with that at all. Courtship shouldn’t end with marriage.
This works very well indeed for myself and my wife, and most others are frankly jealous of how close and sweet my wife and I are to each other. Please don’t see that as bragging, because it’s certainly not meant as such.
But if you want to see what happens to your own marriage if you decide to not court your wife as you did before you got married, go right on ahead. It may work out well for you, and I sincerely wish you the very best.