Welcome to our forum.
Ann Arbor, eh? one of my favorite cities.
You might want to check out our Dating & Friendships subforum
, it might help you in your search. In the meantime, I suggest exploring our various threads and boards and see what calls to you.
Sounds to me like what you're looking for is pretty definable as poly -- kind of a more emotion, commitment type of thing. Of course, polyamorists will argue all day about what the actual definition of polyamory is.
Hope you enjoy your time here.