So from what I can tell, you have this kid who can get upset real easy and he's just needing a friend so he can have someone around and keep his sanity. Instead of wanting your friend back, how about you go and try to be friends with the upset one. As for the sister,tell an adult what's going on. A parent, or techer. Go alone and tell them in all seriousness, about your situation.
Now I have no idea if this advice is any good or not. PM me and i'll try to think up another. :) have a nice day
lios88
I'd really love to help, but it take massive brain power to understand what you just said... while im solving your algebraic equation with no numbers, ill leave this post and get back to you as soon as i can understand this insanely amazingly awesome post that leaves me wondering why you hang out with those people.. or.. err i think..