The best explanation of homosexual tendencies I have ever read is in the book "The Mystery of Sex - a Book About Love" by Laurel Elizabeth Keyes in 1975.
"The ancient philosophers explained homosexuality as a confusion of polarities. Identity was made with the anima (in the male body) and the animus (in the female) instead of their physical vehicles.
It is usually associated with a highly creative or artistic personality in the male. The fruitful potential of the feminine anima is seeking a strong masculine polarity to fructify and protect it. When the man is identified with that he naturally rejects the feminine in physical form, but knowing no other polarity than physical, he finds it in a male body. (It should be a mating of his own natures. making him whole, but orientation has been in duality for so long, people continue to look to another person to fill their needs.) In ignorance of the true forces, and unaware that such a state is indicative of independence from possessive emotional suffering (becoming a complete person, as Arleen Lorrance described in her unification) the confused man looks for polarity for his *emotional* anima in a physical partner of the same sex. It is a mismatching of wind and earth instead of compatible forces of wind and light, and earth and water.
And, the woman who identifies with the strong male force of her animus, ignoring the protective balance of the feminine body, hates the male force she encounters in man. Positives repel, Blindly, she seeks polarity in the physical form for its opposite - another female, instead of its natural anima mate in the male body.
So, the true nature of spiritual forces seeking wholeness *within the individual* remains separated and thwarted. What could be a lifetime of freedom and perhaps genius is thrown back down to limitations and needless conflict by finding polarities on the wrong levels. Their natural balance is so close to completion - if only they would recognize the partner they seek is within and not "out there" in another body.
Life pushes and presses us. It will never let us rest in contentment or apathy until we have found that union with the archetypal pattern, our divine Self."