you haven't betrayed your parents in any way. it sounds as though they and you have been struggling for a long time with this situation until you had the courage to take action.
it's going to take some time to sort things out so that the best solution for everyone is reached. it may be difficult for your brother to move back, both from an emotional and a practical point of view, while for you to move in with him may also cause difficulties because it may involve changing schools and this isn't a great time for you to do that. is it possible for you, your brother and your carers to sit down and discuss the options open to you? hugs, Judith xxx