Male and Female are One in Being by Eckhart Tolle
On the physical level, you are obviously not whole, nor will you ever be: You are either a man or a woman, which is to say, one-half of the whole. On this level, the longing for wholeness -- the return to oneness -- manifests as male-female attraction, man's need for a woman, woman's need for a man. It is an almost irresistible urge for union with the opposite energy polarity.
The root of this physical urge is a spiritual one: the longing for an end to duality, a return to the state of wholeness. Sexual union is the closest you can get to this state on the physical level. This is why it is the most deeply satisfying experience the physical realm can offer.
But sexual union is no more than a fleeting glimpse of wholeness, an instant of bliss. As long as it is unconsciously sought as a means of salvation, you are seeking the end of duality on the level of form, where it cannot be found. You are given a tantalizing glimpse of heaven, but you are not allowed to dwell there, and find yourself again in a separate body.
Enlightened or not, you are either a man or a woman, so on the level of your form identity you are not complete. You are one-half of the whole. This incompleteness is felt as male-female attraction, the pull toward the opposite energy polarity, no matter how conscious you are.
But in that state of inner connectedness, you feel this pull somewhere on the surface or periphery of your life. Anything that happens to you in that state feels somewhat like that. The whole world seems like waves or ripples on the surface of a vast and deep ocean.
You are that ocean and, of course, you are also a ripple, but a ripple that has realized its true identity as the ocean, and compared to that vastness and depth, the world of waves and ripples is not all that important.
This does not mean that you don't relate deeply to other people or to your partner. In fact, you can relate deeply only if you are conscious of Being. Coming from Being, you are able to focus beyond the veil of form. In Being, male and female are one.
Your form may continue to have certain needs, but Being has none. It is already complete and whole. If those needs are met, that is beautiful, but whether or not they are met makes no difference to your deep inner state.
So it is perfectly possible for an enlightened person, if the need for the male or female polarity is not met, to feel a sense of lack or incompleteness on the outer level of his or her being, yet at the same time be totally complete, fulfilled, and at peace within.
Eckhart Tolle -- The Power of Now