Coup de chapeau à la française!
France is not a nation traditionally associated with sexual conservatism.
Yet even in France, enough people recognize the folly of trashing the institution of marriage by redefining it to include populations which do not embrace monogamy and/or radical, lifelong committment (and which, in any case, rarely avail themselves of "marriage" even when it is legally available) that a resistance movement to same-sex "marriage" is in full swing.
Even in France, the institutions of Western culture aren't going down without a fight.
ADDENDUM: Before anybody even says it, I agree: heterosexual couples who do not embrace monogamy and radical, lifelong committment are also not married, no matter what the State may say.