How could I utter this nostalgia - I miss you like crazy but you cannot know. 我按照你的原意修改了一下,更加符合英文的表达.英文里面没有一个代表想念（to miss）的确切名词,nostalgia和remembrance都可以一定程度上符合条件.然后你的后半句语法上缺乏主语似乎.所以我就加入了主语.然后如果直译成英文I can only tell others this crazy feeling of missing you不大优美,所以我就意译了.
