Re: What to do?!
I think he needs some sort of therapy to make him realise that nothing is going to happen to you or his sibling InshaAllah and he should just enjoy life. Do you guys have the kind of relationship to sit and talk to him when he is in a good mood about this? Make him realise that you arent going anywhere. His actions are purely a result of his past and if he is a good person otherwise, i dont see why you need to run in the other direction. I hope he doesnt get physically violent because of this attitude though.