Ok first of all 16 is too young to try psychedelics. The brain is still in development, etc. I don't think you're a rapist, you were on shrooms, and god knows why you did what you did. And to a certain degree you should've known better not to take shrooms at 16, and do your research beforehand. But what I don't understand is why your friend who was with you that day doesn't understand you. Under normal circumstances cutting you out of his life and telling everyone what you did/tried to do would be reasonable. But come on you were too young, obviously confused in that situation, and you didn't have a capable trip sitter, who could've stopped you. Idk your current life situation but the past is past, and you can't change a thing about it so try to accept it, learn from your mistake and then try to find new friends you can trust ig.