Stagnant air

I seem to be adrift in the doldrums. I have been unable to drum up even a tiny amount of creative energy as of late. Life as a whole feels as if it rests in some intricately woven hammock, like every influence in my life has decided to take an impromptu sabbatical. The whole world seems uninspiring and unmotivated. This is not to imply that there are no points of interest in my life, but rather, when taken as a whole nothing outstanding is leading me on to new horizons. This is the kind of place one finds them-self when they reach partial fulfillment; when you feel that your situation is livable, though not ideal, but you fear that making even subtle changes might result in a retraction.
What happens when you fall in love with someone, when you know they are the one person you've searched for your entire life, you try to express that to them, and they apologize for not feeling the same way? Where do you go from there? I expected the world to stop its rotation and everything to go flying off into the vacuum. Instead it all continues moving just as if nothing had ever occurred. I kept moving. I'm still breathing. Well. Fuck.
Apparently life continues its solemn march. I've allowed myself to settle in. Being in close proximity feels better than nothing. Apparently the gravitational interplay lead me into a tidally-locked orbit. I am simply revolving around the greater body, unable to look away, unable to alter course. This arrangement is functional and productive, though in ways neither of us would have expected.
The relationship, that has developed, emulates every function of a love relationship, with the one notable exception of just that. It is a carbon copy, and whomever scribed the original failed to press firmly enough with the quill. The daily functions of the household are met by mutual effort. The emotional, intellectual, physical, and sexual rapports are near perfect. There is an open air of trust, honestly, and respect. I just don't understand why it must remain just what it is.

The spark obviously exists, why wont the fuel burn?