Yetzer ra (the evil impulse)
Humanity was formed with two impulses: a good impulse (the yetzer tov) and an evil impulse (the yetzer ra).
The yetzer tov is the moral conscience, the inner voice that reminds you of G-d's law when you consider doing something that is forbidden.
The yetzer ra is more difficult to define, because there are many different ideas about it. It is not a desire to do evil in the way we normally think of it in Western society: a desire to cause senseless harm. Rather, it is usually conceived as the selfish nature, the desire to satisfy personal needs (food, shelter, sex, etc.) without regard for the moral consequences of fulfilling those desires.
The yetzer ra is not a bad thing. It was created by G-d, and all things created by G-d are good. The Talmud notes that without the yetzer ra (the desire to satisfy personal needs), man would not build a house, marry a wife, beget children or conduct business affairs. But the yetzer ra can lead to wrongdoing when it is not controlled by the yetzer tov.
The yetzer ra is generally seen as something internal to a person, not as an external force acting on a person. The idea that "the devil made me do it" is not in line with the majority of thought in Judaism. Although it has been said that Satan and the yetzer ra are one and the same, this is more often understood as meaning that Satan is merely a personification of our own selfish desires, rather than that our selfish desires are caused by some external force.
People have the ability to choose which impulse to follow: the yetzer tov or the yetzer ra. That is the heart of the Jewish understanding of free will. (Judaism 101)
Sexual relations between men are clearly forbidden by the Torah. Don't feel to bad about it because Jewish law clearly prohibits male masturbation and we know that isn't stopping anyone. Some modern Orthodox sources suggest that if homosexuality is truly something hardwired in the brain, as most gay activists suggest, then a man who acts upon that desire is not morally responsible for his actions.
Conservative rabbi and congregation can choose to hire homosexual rabbis or perform same-sex commitment ceremonies, but if they choose to or not they are expected to show respect and sensitivity to all people. All Jews, no matter what their sexual orientation, are welcome into Conservative congregations.
And we do know this: Torah law forbids bigotry; homophobia is prohibited.
When we become judges of another person, we behave contrary to Torah law.
Consider what it means to have such burning passions for forbidden fruit. Consider the day to day fierce and relentless battle demanded to conquer such passions. And then ask yourself, "Do I ever fight such a battle on my own ground?" (Chabad.org)
Many progressive Jews also believe that calling homosexuality "unnatural" is incorrect. They site numerous studies which have found that homosexuality occurs in nature among every species of mammal and among most other species of animals. Sexually aroused animals will try to mate with the nearest partner. It has been concluded, therefore, that there is an innate drive toward the release of sexual tension, and this release can be accomplished through either homosexual or heterosexual relations. (Judaism.about.com)
More liberal Jews believe that the translation of the word "to'evah" to "abomination" is inaccurate. The other times that "to'evah" is used in the Bible, it is used to refer to forbidden idolatrous acts. Therefore, looking at the biblical context in which the word is used," the passages in Leviticus about homosexuality must be referring to cultic practices of homosexuality rather than loving homosexual relationships which exist today.
Jewish Attitudes Towards Sexuality
In Jewish law, sex is not considered shameful, sinful or obscene. Sex is not thought of as a necessary evil for the sole purpose of procreation. Although sexual desire comes from the yetzer ra (the evil impulse), it is no more evil than hunger or thirst, which also come from the yetzer ra. Like hunger, thirst or other basic instincts, sexual desire must be controlled and channeled, satisfied at the proper time, place and manner. But when sexual desire is satisfied between a husband and wife at the proper time, out of mutual love and desire, sex is a mitzvah.
In the Torah, the word used for sex between husband and wife comes from the root Yod-Dalet-Ayin, meaning "to know," which vividly illustrates that proper Jewish sexuality involves both the heart and mind, not merely the body.
Sex is the woman's right, not the man's. A man has a duty to give his wife sex regularly and to ensure that sex is pleasurable for her. He is also obligated to watch for signs that his wife wants sex, and to offer it to her without her asking for it. The woman's right to sexual intercourse is referred to as onah, and it is one of a wife's three basic rights (the others are food and clothing), which a husband may not reduce.