Pshhh...I keep hearing people who say "No boundries should be set...ever...for anyone". If this is the case, then why get married in the first place? You would be much better served by being single and being in open relationships.
My wife and I have boundries set, so that we have certain actions which are reserved for just each other. It's our little way to let each other know that we are still attached. Now, my gf, V, and I don't have anything that is just ours yet....Maybe someday, when we get further into our relationship, we will. But I'm not going to put the cart in front of the horse on that one.
There is a lid for every pot...Sometimes even two or three...