There's absolutely no way I can forget you. 我忘记你是完全不可能的. It's impossible to make me forget you. 让我忘记你,是不可能的. There's no way you can make me forget you. 不管你怎么做,我都忘不了你. Forgetting you is something I cannot do. 忘记你是一件我做不到的事情. (这个语法上可能最接近你的句子,但在英文里这样说有些别扭,后面连不上别的句子)
