No.. I am saying that there is no necessary relationship between the two concepts your tried to relate together. As such, your argument to that effect is unsound.So are saying you don't believe same-sex marriage is a slippery slope. Good, at least we agree on that.
Logical Fallacy: Appeal to IgnoranceThere is no valid reason--legal or otherwise--to oppose same-sex marriage. I've never read a post that provided such a reason.