That is a really hard situation. I know it sounds really hard, but just try to keep going to school with a positive attitude. Show confidence. Don't lose hope. Find someone trustworthy you can confide in and ask an adult to help you through the situation. See if you can have a conversation with just your friend alone and try to talk it over in a rational way. Ask to see his/her point of view on the situation and ask them to listen to your point of view. I hope my advice helps. It is hard when you don't know about specifics of the situation and the people involved. Good Luck and stay strong and positive!