"Never misunderstand love for something else. If love is really love.... What do I mean when I say 'really love'? I mean that just being in the presence of the other you feel suddenly happy, just being together you feel ecstatic, just the very presence of the other fulfills something deep in your heart... something starts singing in your heart, you fall into harmony. Just the very presence of the other helps you to be together; you become more individual, more centered, more grounded. Then it is love.
Love is not a passion, love is not an emotion. Love is a very deep understanding that somebody somehow completes you. Somebody makes you a full circle. The presence of the other enhances your presence. Love gives freedom to be yourself; it is not possessiveness.
So, watch. Never think of sex as love, otherwise you will be deceived. Be alert, and when you start feeling with someone that just the presence, the pure presence - nothing else, nothing else is needed; you don't ask anything - just the presence, just that the other is, is enough to make you happy... something starts flowering within you, a thousand and one lotuses bloom... then you are in love, and then you can pass through all the difficulties that reality creates. Many anguishes, many anxieties - you will be able to pass all of them, and your love will be flowering more and more, because all those situations will become challenges. And your love, by overcoming them, will become more and more strong.
Love is eternity. If it is there, then it goes on growing and growing. Love knows the beginning but does not know the end."
~ Osho - Book: The Discipline of Transcendence Volume 1