Boyfriend/my parents. how to keep them quiet?

ASk them to have a mature conversation with you for a momment. Explain to them that he has changed, and beg them to give him the benefit of the doupt. Tell them to keep the peace for a week and then when they go home they can have any umption they want about him. But they need to give you the chance to prove that your making a mature choice in your life as well. Tell them they need to trust that you are doing what you think is good.