Mahalo (thanks in Hawaiian) for asking this controversial and complex question. There is not one answer that fits everyone. I will give a brief, general answer here, so please, if you don’t understand, ask!
First, to answer this question, we need to know the definition of homosexual. Google Dictionary says homosexual refers to a person who is sexually or romantically attracted to people of their own sex. Sexually or romantically attracted, so does this mean that friends with a person of the same sex is not being gay? Yes, no matter how close to a friend of the same gender you are, it is not sinful until you have or intend to have sex.
Second, we need to know the intent of the relationship. Having sex outside of the Biblical requirements of being between a male and female is a sin, period. If your intent is purely companionship, you are not gay. I knew a few domestic couples of the same gender who were good Christian leaders. Their close relationship never lead to sex. They were good, respected leaders in the Christian community.
Gay rights have nothing to do with feelings or a person’s right to choose. God said sex is wrong outside Biblical marriage. You have the right to be with and feel close to anyone as long as you do not cross the line. Gay, straight, or in between does not matter; sexual sin does.
Remember, if you don’t understand, ask!