public function removeFriendship(DataObject $relationship) {
		if ($relationship && $relationship->canDelete()) {
			
			// need to remove this user from the 'other's followers group and friends group
			// if needbe
			if ($relationship->Status == 'Approved') {
				$reciprocal = $relationship->reciprocal();
				if ($reciprocal) {
					// set it back to pending
					$reciprocal->Status = 'Pending';
					$reciprocal->write();
				}
				
				$friends = $relationship->Other()->getGroupFor(MicroBlogMember::FRIENDS);
				$relationship->Initiator()->Groups()->remove($friends);
				
				$friends = $relationship->Initiator()->getGroupFor(MicroBlogMember::FRIENDS);
				$relationship->Other()->Groups()->remove($friends);
			}
			
			$followers = $relationship->Other()->getGroupFor(MicroBlogMember::FOLLOWERS);
			$relationship->Initiator()->Groups()->remove($followers);
			
			$relationship->delete();
			return $relationship;
		}
	}