A：Mary has really gotten under my skin.
      玛丽真让我心烦。

B：I know what love is. When I was young, I felt the same way.
      我知道爱情是什么。我年轻时，也有这种感觉。

A：It thinks I’m crazy about her.
      我快要为她痴狂了。

crazy的解释

B：You are, why not ask for a date?
      快了。为什么不约她？

1. 不理智的;愚蠢的;古怪的
    If you describe someone or something as crazy, you think they are very foolish or strange.

crazy

    e.g. People thought they were all crazy to try to make money from manufacturing...
           人们认为他们简直是疯了，竟然想从制造业中赚钱。
    e.g. That's why he's got so caught up with this crazy idea about Mr. Trancas.
           那就是为什么他对特兰卡斯先生一直有如此疯狂的想法。

2. 精神失常的;患精神病的
    Someone who is crazy is insane.

    e.g. If I sat home and worried about all this stuff, I'd go crazy...
           如果整天坐在家里为这些事情担心，我会疯掉的。
    e.g. He strides around the room beaming like a crazy man.
           他绕着房间大步地走着，像个疯子一样笑着。

3. 热衷的;狂热的
    If you are crazy about something, you are very enthusiastic about it. If you are not crazy about something, you do not like it.

    e.g. He's still crazy about both his work and his hobbies...
           他对工作和个人爱好依然保持狂热。
    e.g. I'm also not crazy about the initial terms of the deal.
           我对该协议的最初条款也不太满意。

4. 迷恋的;爱上的
    If you are crazy about someone, you are deeply in love with them.

crazy的解释

    e.g. None of that matters, because we're crazy about each other.
           那些都不重要，因为我们深深地爱着对方。

5. 极度烦恼的;非常生气的
    If something or someone makes you crazy or drives you crazy, they make you extremely annoyed or upset.

    e.g. This sitting around is driving me crazy...
           老这样坐着无所事事快让我发疯了。
    e.g. When Jock woke up and found you gone he went crazy.
           乔克醒来发现你走了，他简直气疯了。

6. 拼命地;疯狂地
    You use like crazy to emphasize that something happens to a great degree.

    e.g. The stuff was selling like crazy...
           这东西卖疯了。
    e.g. Some people can diet like crazy and not lose weight.
           有些人拼命节食也不能减肥。