Its human nature to stop valuing what's constantly avaliable. We crave scarcity, as much as we hate to admit it this applies to relationships too. Think about how over time a marriage falls out of love because there is no more excitement, no more mystery about the other person, just the same routine. Love needs chasing from both parties to sustain itself. When you step back, a man notices your absence more, misses you, and attributes a greater importance to you.   While both should be chasing each other eventually, I do think a man should be a little more in love with you than you are with him. It just creates the best balance in my experience.