You are what you are. Can you change your sexual orientation? Do you think that a girl who loves you more than anything in the world gonna change it?
I'm not saying that turning a staight guy is entirely impossible. But the possibility is small.
If you are open-minded enough to consider a mission impossible, why not give a guy who actually shares your perspective a chance?
Who knows, you might find your soul mate by giving it a try.
Good luck!