Sometimes parents fall out of love with each other, for reasons no one else understands. They may like different things, and want to do different things from each other. Because of this, they begin to argue, and then they become more and more unhappy.
Divorce is never the child's fault.
Divorce is something that happens between two adults and it is not because of anything that someone else did. Yes they do. Ask them, and they will tell you. The divorce was not your fault, and your parents are not angry with you. Your parents will still take care of you.