Sat Sri Akaal to all,
I am pleasantly surprised with the positive responses here! I have seen a lot of homophobia in the Sikh community, which is unjustified, whatever one thinks of the 'issue'.
The Guru Granth Sahib contains verse upon verse criticising heterosexual (straight) lust. Guru Nanak was familiar with homosexuality, he had read the Qu'ran which contains the story of the Prophet Lot, if he felt homosexuality was a sin, then he would have included it in his teachings.
However, no traditional religious teacher in the past has ever liberated gay people, and hence we are in this position today. We want to belong but there is no real place for us. Scripturally, and in theory, there is a place for gay people in Sikhism. As Harvir pointed out, the soul is genderless, and therefore lust is still lust regardless of gender it is directed too, and marriage is a simple union between two souls.
Although I have much of the Guru Granth Sahib many times, I am completely disconnected withthe Sikh community. The barrier of my race can be overcome amongst the truly religious, but my sexuality will always be a problem. So in practice, what is being said in this thread, does not play out in reality.
Sarabjeet I wish you all the best in your journey. There is nothing in the Guru Granth Sahib against being a homosexual.
Although I am very dubious of their teachings (big emphasis on yoga and the spiritual power of amulets, stones and beads), 3ho are very open towards GLBT individuals, and I believe they have even conducted same-sex anand karaj. You could consider a vacation to a more accepting Sikh community (does not mean you need to accept all of their teachings in your heart), although this may cause family problems. It depends what your priorities are.
Best of luck. CaramelChocolate