It is fantastic when two people really mesh. I am so glad that you have that.
I don't know what movie it was; it was a long time ago. Far enough back that it was before colored movies---any way one of the characters said that marriage is not 50:50. For a marriage to flourish it needs to be 75:75. Or, in woodworking terms, a butt joint can break a heck of a lot easier than a mortise and tenon joint.
For you to be happy in your marriage after this many years means you are definitely in the mortise and tenon category. CONGRATULATIONS!!!
Continue to Enjoy,
JimB