The first ... is often referred to somewhat derisively in the poly world as the OPP or "One Penis Policy"
As you keep bringing this up, I've decided to create a new thread, which is where my response resides.
http://www.polyamory.com/forum/showthread.php?t=95986
I'm not sure if what we're doing is poly or open marriage or something else.
Thus far, it's
a sexually-open marriage, at least in the sense that you are (at the moment)committed to being "a couple" & keeping the dyad central. Nobody is yet nonmonogamous, much less polyamorous.
Of course, that status is
theoretical: you're willing to explore it, but it's not yet tested by reality. (You can WANT to drive a Formula One car, but you're NOT "a Formula One driver" until you actually get behind the wheel at least ONCE, no matter how obsessed you are with the notion.)
When one of you actually becomes attached to another person, then you all will have the opportunity to determine whether the three of you are willing to maintain the "sexually open marriage" status. (Options include ending the present couple in order to start a new one.)
If a person has more than one sex/emotional relationship, then that person can be said to be nonmonogamous. However, if the people they're attached to have only one intimate, then THEY aren't "nonmonogamous." Similarly, someone involved with a person living polyamorously isn't necessarily polyamorous in the least, especially if their interaction with their partner'sother partners is minimal. So, if your wife is out exploring, that doesn't make YOU somehow poly.