I'm not married, and I'm not dating, and I live in a country where gay marriage has been legal for years.
Surprise surprise, heterosexual marriage has not been hurt by gay marriage. In fact there's been no effect whatsoever, other than that now, gay people have the same rights that hetersexual people do.
Americans, please vote against any amendment that's a bigoted pile of trash, likes th ones trying to ban gay marriage.
And oh yes, isn't there a thing in the bible against worshiping false idols? I'm pretty sure it's in the ten commandments.