Is "Friending" reciprocal?

If someone accepts a friend request - does it establish a mutual friendship? I would assume so - but when I test it, it is only working one way, in other words
I created 3 users: ChatA, ChatB, and ChatC. ChatA & ChatB both sent out FRIEND requests to ChatC in which ChatC approved both Friend requests. ChatA & ChatB friend lists include ChatC - but ChatC is listed without ANY friends. Is this the correct functionality as designed in which ChatC would in turn need to friend both ChatA & ChatB in order to have them listed as friends on his site. It seems that it should be a reciprocal friendship. Please clarify.