Torah doesn't say anything about being 'gay'... Torah expressly forbids the male-male sexual intercourse... But there is nothing about being 'gay' in Torah...
Here is the information from jewfaq.org
http://www.jewfaq.org/sex.htm
Homosexuality
Sexual relations between men are clearly forbidden by the Torah. (Lev. 18:22). Such acts are condemned in the strongest possible terms, as abhorrent. The only other sexual sin that is described in such strong terms is the sin of remarrying a woman you had divorced after she had been married to another man. (See Deut. 24:4). The sin of sexual relations between men is punishable by death (Lev. 20:13), as are the sins of adultery and incest.
It is important to note, however, that it is homosexual acts that are forbidden, not homosexual orientation. Judaism focuses on a person's actions rather than a person's desires. A man's desire to have sex with another man is not a sin, so long as he does not act upon that desire. In fact, it could be said that a man who feels such desires but does not act upon them is worthy of more merit in that regard than a man who does not feel such desires at all, just as one who refrains from pork because it is forbidden deserves more merit than one who refrains from pork because he doesn't like the taste.
I have seen 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, but I am not sure how wide-spread that opinion is. In any case, it is not quite as liberal a position as some would have you believe: essentially, it is equivalent to saying that a kleptomaniac would not be held morally responsible for stealing.
Interestingly, female homosexual relations are not forbidden by the Torah. There is very little discussion of female homosexuality in the Talmud. The few sources that mention lesbian relations say that they do not disqualify a woman from certain privileges of the priesthood, because it is "merely licentiousness." There is a surprising lack of discussion of such issues as whether lesbianism would be grounds for divorcing a woman without her consent or without ketubah. Rambam asserted that lesbian practices are forbidden because it was a "practice of Egypt" and because it constituted rebelliousness.
Leviticus 18
20 And thou shalt not lie carnally with thy neighbour's wife, to defile thyself with her.
21 And thou shalt not give any of thy seed to set them apart to Molech, neither shalt thou profane the name of thy God: I am the LORD.
22
Thou shalt not lie with mankind, as with womankind; it is abomination. 23 And thou shalt not lie with any beast to defile thyself therewith; neither shall any woman stand before a beast, to lie down thereto; it is perversion.
24 Defile not ye yourselves in any of these things; for in all these the nations are defiled, which I cast out from before you.
