Eliot, Marvell say it better...

Lady and Gentleman, if you still exist...
These two say better, what I heave in vain to grist...

Andrew Marvell's Definition of Love
http://www.luminarium.org/sevenlit/marvell/definition.htm

T.S. Eliot's Love Song of J. Alfred Prufrock
http://www.bartleby.com/198/1.html