I still can’t say definitively whether Peter is married, but the odds have sure increased. Today’s California Supreme Court ruling means not only that if he is in California, he is now married, but also that he was married the last time he was in California, even though we didn’t know that for sure at the time. And presumably, if he is in (say) Iowa or Massachusetts, he is married as well.
But odds are that he’s in Washington, DC at the moment. That would mean that he’s not married. If nothing happens (say, Congress making a decision), then come June 6th (if I understand correctly), if he’s still there, he’s married.
I still haven’t reviewed the ruling to see if it clarifies whether, for example, a couple who got a same-sex marriage in Boston and then moved to California during the equal marriage period are still married. This is a game you can play with any same-sex couple that has applied for a marriage license at some point… but as with Six Degrees of Kevin Bacon, the real game will always be about Peter.