This is a basic seven card spread. It is designed to give information about an existing relationship. While I have frequently used it for romantic relationships, it really is effective for pretty much any type of relationship. This is one that I learned from Facade.com's selection of tarot spreads, therefore I can not take credit for it. It is, however, one that can be built upon for additional detail as you place cards to clarify the details.
Position one shows how the querent feels about their role in the relationship. Position two shows what the querent feels is the standing of the relationship. Position three shows what the querent feels about the other person involved in the relationship.
Positions four through six present the same information but from the perspective of the other person in the relationship. Position seven presents the objective perspective of a third party on the relationship.
Sometimes, I lay an additional six cards out, three to either side of the columns. They present the hidden aspects of the three cards they are beside.