Miss Loo, I'm sorry you are having such a rough time at things. Just know that you have friends here and other places that you can talk to, me included. I just wanted to let you know...
I think that skinny girls and not so skinny girls are all hot! I have friends that are skinny and friends that aren't. They are all great girls and I love them all.
I think you should let your Mom have her fun. My Mom likes to be around all the guys and I don't mind it at all. I've met some of them, and most are pretty cool. As long as my Mom is happy then I'm happy. I think you should be happy for her. If it bothers you too much then talk to her about it.
Why would you want to kill yourself? Do you want to hurt someone and make them feel bad about how they treated you? Do you feel like you can't make friends? You might want to kill yourself but the only thing that it will do is make others think of how stupid you were for killing yourself. It's totally not the answer...