Nope, why do you think he spends so much time with Alyx? Because he has to? No, fool.
In the demented minds of some fan fiction writers, perhaps. But, in Half Life canon, certainly not! Why else would Valve's game developers deliberately choose to pair him with the lovely Alyx Vance (who just so happens to be a woman)?
126.96.36.199 20:52, May 20, 2011 (UTC)
It is quite possible that gordon is asexual, as it appears he does not find alyx attractive (the player might, but consider it storywise)