Great feeling isn't it? Not quite there yet (age still starts with a five) but I know where you are coming from. I have been blessed with a wife for life and can't imagine another way.
Sounds like the women covered here:
We pray together every day (for the most part) and every day part of our prayer is thanking him for giving us each other and that our love will continue to grow as it has in the past.
What’s weird is that lately I’ve been sharing with my wife that I thought it was as joyful and complete as is possible for human beings and then He bumps it up yet another notch, and yet another, and so on. Sometimes it is almost overwhelming. I’ll start tearing up as I drive home because of how I feel about that woman. And she’s the same way about me.
It doesn’t come from us. We are truly blessed by the Lord.