I really don't get how what two consenting adults do in the privacy of their own homes is anybody's business but theirs.
As for the religious aspect. If having same sex relations is against your religion, have sex with someone of the opposite sex. Follow your own religious principles but don't expect people out of your religious persuasion to follow you.
Some religions make no distinction between same sex or opposite sex relations. The rules are the same for both. Example? The Buddhist tradition as taught by Thich Nhat Hanh.
"Aware of the suffering caused by sexual misconduct, I vow to cultivate responsibility and learn ways to protect the safety and integrity of individuals, couples, families and society. I am determined not to engage in sexual relations without love and a long-term commitment. To preserve the happiness of myself and others, I am determined to respect my commitments and the commitments of others. I will do everything in my power to protect children from sexual abuse and to prevent couples and families from being broken by sexual misconduct."
http://dharma.ncf.ca/introduction/precepts.html
And part of his commentary on the Third Precept on Sexual Misconduct:
A sexual relationship is an act of communion between body and spirit. This is a very important encounter, not to be done in a casual manner. You know that in your soul there are certain areas -- memories, pain, secrets -- that are private, that you would only share with the person you love and trust the most. You do not open your heart and show it to just anyone. In the imperial city, there is a zone you cannot approach called the forbidden city; only the king and his family are permitted to circulate there. There is a place like that in your soul that you do not allow anyone to approach except the one you trust and love the most.
The same is true of our body. Our bodies have areas that we do not want anyone to touch or approach unless he or she is the one we respect, trust, and love the most. When we are approached casually or carelessly, with an attitude that is less than tender, we feel insulted in our body and soul. Someone who approaches us with respect, tenderness, and utmost care is offering us deep communication, deep communion. It is only in that case that we will not feel hurt, misused, or abused, even a little. This cannot be attained unless there is true love and commitment. Casual sex cannot be described as love. Love is deep, beautiful, and whole.
True love contains respect. In my tradition, husband and wife are expected to respect each other like guests, and when you practice this kind of respect, your love and happiness will continue for a long time. In sexual relationships, respect is one of the most important elements. Sexual communion should be like a rite, a ritual performed in mindfulness with great respect, care, and love. If you are motivated by some desire, that is not love. Desire is not love. Love is something much more responsible. It has care in it.
We have to restore the meaning of the word "love." We have been using it in a careless way. When we say, "I love hamburgers," we are not talking about love. We are talking about our appetite, our desire for hamburgers. We should not dramatize our speech and misuse words like that. We make words like "love" sick that way. We have to make an effort to heal our language by using words carefully. The word "love" is a beautiful word. We have to restore its meaning.
"I am determined not to engage in sexual relations without love and a long-term commitment." If the word "love" is understood in the deepest way, why do we need to say "long-term commitment"? If love is real, we do not need long or short-term commitments, or even a wedding ceremony. True love includes the sense of responsibility, accepting the other person as he is, with all his strengths and weaknesses. If we like only the best things in the person, that is not love. We have to accept his weaknesses and bring our patience, understanding, and energy to help him transform. Love is maitri, the capacity to bring joy and happiness, and karuna, the capacity to transform pain and suffering. This kind of love can only be good for people. It cannot be described as negative or destructive. It is safe. It guarantees everything.
Should we cross out the phrase "long-term commitment" or change it to "short-term commitment"? "Short-term commitment" means that we can be together for a few days and after that the relationship will end. That cannot be described as love. If we have that kind of relationship with another person, we cannot say that the relationship comes out of love and care. The expression "long-term commitment" helps people understand the word love. In the context of real love, commitment can only be long-term. "I want to love you. I want to help you. I want to care for you. I want you to be happy. I want to work for happiness. But just for a few days." Does this make sense?
You are afraid to make a commitment -- to the precepts, to your partner, to anything. You want freedom. But remember, you have to make a long-term commitment to love your son deeply and help him through the journey of life as long as you are alive. You cannot just say, "I don't love you anymore." When you have a good friend, you also make a long-term commitment. You need her. How much more so with someone who wants to share your life, your soul, and your body. The phrase "long-term commitment" cannot express the depth of love, but we have to say something so that people understand.
A long-term commitment between two people is only a beginning. We also need the support of friends and other people. That is why, in our society, we have a wedding ceremony. The two families join together with other friends to witness the fact that you have come together to live as a couple. The priest and the marriage license are just symbols. What is important is that your commitment is witnessed by many friends and both of your families. Now you will be supported by them. A long-term commitment is stronger and more long-lasting if made in the context of a Sangha.
http://dharma.ncf.ca/introduction/precepts/precept-3.html