Is

“Love is that condition in which the happiness of another person is essential to your own.”
― Robert A. Heinlein, Stranger in a Strange Land

“A woman is like a tea bag; you never know how strong it is until it's in hot water.”
― Eleanor Roosevelt

“Love never dies a natural death. It dies because we don't know how to replenish its source. It dies of blindness and errors and betrayals. It dies of illness and wounds; it dies of weariness, of witherings, of tarnishings.”
― Anais Nin

“Love is an irresistible desire to be irresistibly desired.”
― Robert Frost