Over 50 years ago I remember reading this verse and recognizing, "What a good place for God to be in any relationship!" I saw that when God is between myself and any other person, then God is more important to me than anyone. And that's what God wants. Matthew 6:33 speaks of "Seeking first the kingdom of God and His righteousness..." which means keeping Him and His will foremost in our hearts and minds.
Now, if someone is between my wife and myself, then somethings wrong. No person, thing, or activity should ever be more important to me than my wife. But, when it comes to God, I've seen something I know I've shared before. Please get this clear: WHEN GOD IS WHERE HE BELONGS IN MY LIFE THEN EVERYONE ELSE CAN BE WHERE THEY BELONG IN MY LIFE! That means that if God is first place in my life, then even my wife will then be where she belongs in my life. And don't think for a moment that with God "between" my wife and myself that He will separate us! God forbid! What will happen is that He will bring us even closer together! With God between her and myself then both of us see each other through our "God lens!" And we see how blessed we are to have each other and how we can focus on the really important matters in our lives.
Now, this principle works with our friends, with any acquaintances we might have, with our jobs, our education, our hobbies, with anything! Putting God between all of the above keeps our priorities in order. We'll find our worship is directed towards our Savior, not on occupation! We'll yield to God and not to the enticements of others, no matter how innocent they may be. We'll look at life through God's eyes and we'll look at one another the same way. How "clear" is your vision today? If you look at work, for instance, as more important than God and His Word and His people, you're not seeing clearly!
Ask God to step into His proper place in your life.