BTW, I personally know two pairs of IDENTICAL twins where one is gay and the other isn't. In one case, the straight one was my college room mate, and he was one of the most normal people I've ever met.
Perhaps the homosexuality in this case comes from one identical twin wanting the one thing that would make him different than the other twin.
As an aside on the story notice the mother has a masters in counseling. My guess is this kid is the product of a councilor experimenting on her own children.
Possibly, but it definitely would seem to preclude any genetic predisposition.