Not only do we have endless demands, but on top of it all we want to be happy.

Contained within the small circle of the wedding band are vastly contradictory ideals. We want our chosen one to offer stability, safety, predictability, and dependability – all the anchoring experiences. And we want that very same person to supply awe, mystery, adventure, and risk. Give me comfort and give me edge. Give me familiarity and give me novelty. Give me continuity and give me surprise. 

(Esther Perel, The State of Affairs)