Desiring God has published an article by Nick Roen entitled "Is It Sin to Experience Same-Sex Attraction?" Roen believes there is a distinction between experiencing temptation and engaging in sin. I believe this is a helpful and, most importantly, biblical distinction. Our Lord was tempted in every way as are we yet without sin. Certainly, since we are fallen and "groaning" (Rom 8) we know what it is for temptation to give way to lust which then gives birth to evil deeds. But this does not change the fact that being tempted is not the same thing as being carried away by our lusts. Indeed, to equate the experience of temptation with sinful lusts and evil deeds is to place a burden upon our brothers and sisters that Scripture does not.
If are interested in reading more about Same Sex Attraction and homosexuality from a distinctively Biblical/Christian perspective, the following resources are helpful:
Secret Thoughts of an Unlikely Convert by Rosaria Champaign Butterfield
Is God Anti-Gay? by Sam Allberry
Love Into Light: The Gospel, The Homosexual, and the Church by Peter Hubbard
Out of a Far Country by Yuan & Yuan