Love (from Captain Corelli's Mandolin)

"Love is a temporary madness. It erupts like an earthquake and then
subsides. And when it subsides you have to make a decision. You have to work out
whether your roots have become so entwined together that it is inconceivable
that you should ever part. Because this is what love is. Love is not
breathlessness, it is not excitement, it is not the promulgation of promises of
eternal passion. That is just being "in love" which any of us can convince
ourselves we are.

Love itself is what is left over when being in love has burned away,
and this is both an art and a fortunate accident. Your mother and I had it, we
had roots that grew towards each other underground, and when all the pretty
blossom had fallen from our branches, we found that we were one tree and not
two."