Your friend was very destructive for you. A true friend would have helped you get better and try to work on the things that made you feel so bad that you chose to do what you did. I can't say why he encouraged you instead of helping, but he has definitely a bad influence. I'm sorry you went through so much pain, only to reach out to someone and have them lead you towards self destruction. Your friend should have gotten in trouble, but the law is murky on this issue.

I think that is a side issue. I would make sure he is out of your life and start going to therapy to learn how to process this trauma and begin to get your life into a better place. Having attempted myself, I can say it isn't something that goes away or you forget about. You sound like you need help to cope with it, along with all of the issues that brought you to this decision. I hope you find the help you need and can begin to sort your life out. Good luck.