Dear Ann Landers, Wonder if you could advise me:I had a falling out with a friend of 30 years. I am feeling betrayed by another friend. This friend secretly plans outings with the friend of 30 years. She feels the need to hide from me that she sees this friend of mine. This friend (the one I feel is betraying me) never knew the other woman until I introduced them to each other. Can you explain this to me? I feel hurt, even mad. - Catty