Safe to say Justice Kennedy is the man where this will all play out.
Based on the fact that he’s authored the only two pro-”gay rights” decisions (Romer v. Evans and Lawrence v. Texas) that the SCOTUS has ever handed down, I think it’s pretty much guaranteed that he’ll back gay marriage. The only question is when. He and the libs may want to wait until more states have supporte d gay marriage before hearing any case concerning gay marriage, whether it be full faith and credit or a direct equal protection challenge to all marriage laws.