Christian single experiencing same sex attraction feel stuck

As a Christian single adult who has never had an interest in the opposite sex or marriage, how do you suggest I move forward and live my life? I believe in the importance of marriage and in some ways I'm a perfect candidate – a twenty-something guy with a stable job and an earnest desire to serve the Lord. I've discovered though, to my own dismay, that I'm attracted exclusively to my own sex. I can't tell you how painful this has been for me. I know that homosexuality is a sin, and I feel terribly guilty about not fulfilling my role as a Christian husband and father. I could probably grit my teeth and force myself to marry a woman, but I'm pretty sure that this wouldn't be a good idea. What should I do?