Asking Myself "What is My Relationship Really Dedicated To?"

I got to thinking about this after I heard that in relationship is the easiest place for us to hide our selfishness. Often we're so much more ready to examine other parts of our lives. It might seem self evident, or strange to ask the question: what is my relationship dedicated to? Is it dedicated to comfort, stability, pleasure, love, intimacy, liveliness, predictability, perfection, appearances, spirituality, fending off loneliness, filling a void? What's the default thing that my relationship is dedicated to? What would I actually like to dedicate it to? Have I ever discussed this with my partner? Would I be willing to do so?