No (D)
As everyone knows already, I staunchly oppose redefining marriage. However, I do support civil unions which grant the same fullest rights to those who by definition do not wish to get married in the legal and factual sense.
Virtually all my friends do support this however, and as frustrating as I find it, we agree to disagree.
So you're OK with redefining it to "two people of the opposite sex who love each other" and can accept that fundamental change, but you can't accept the much smaller, less fundamental change of allowing same-sex couples too? Completely and utterly illogical.