Not really. I'm conservative in that I don't think that being radical will ever help your cause (see the French Revolution). I'm liberal in that I think people should be able to do whatever the hell they want with their lives (i.e., classical liberalism. It follows that I don't support excessive government interference, regulation, or social programs, so I wouldn't go on about being liberal, as that's what the U.S. Democrats have used to describe their platform (which isn't liberal in the traditional sense).
For the record, the government doesn't need to regulate marriage whatsoever. Obviously they want to know for tax purposes, but they shouldn't care about the genders of the people involved. Churches can say whatever they want about marriage, I don't really care, and I don't think gay people do either.
So which label do you want to attach to me?