Like a hind crying for water, my soul cries for You, O God; my soul thirsts for God, the living God; O when will I come to appear before God! (42:2-3)
The human desire to form a relationship with a creator is natural, although the new generation of atheists, such as Richard Dawkins, see it as a delusion. We are constantly trying to make sense of the complicated world in which we live by using the scientific method of identifying cause and effect. Every object was created through some process, and if we trace the creation of the object back far enough, we can discover how the object functions. We identify the rules by which the object was created and continues to operate in the world. We might even identify the original purpose of the object, and its original creator or designer.
By understanding the world, we think we can improve it. The desire to understand, to fix, to improve, is part of the same internal soul-inclination that directs so many of us to want to be in a relationship with God, or that directs some of us to loudly and angrily deny that such a relationship can ever exist.
My support of same sex relationships is based on the idea that the desire to be in relationship is a fundamental human need. We need parents and teachers to nurture us as children, we need siblings or friends to teach us about peer relationships, and for many, the desire to marry and possibly produce a new generation of children is our ultimate goal in forming relationships.
I affirm the possibility of reading Leviticus 18 either as a limited prohibition on same sex sexuality or as no longer halakhically applicable, based on a paper by Rabbis Elliot Dorff, Daniel Nevins, and Avram Reisner; or as argued in a paper by Rabbi David Greenstein, or in a book by Rabbi Steven Greenberg. The powerful image of a soul thirsting for the presence of God is no less true with respect to a human relationship. To deny a gay or lesbian individual the opportunity to have intimate partnership is to sentence him or her to live without the fulfillment of a fundamental human need.