2--It is impossible. You cheated on me.

1--No, listen to me. I always regard you as my best friend. I admire you, and of course you've helped me so much. I should thank you.

2--Shut up!

1--No, listen to me. Perhaps it's my fault that I treat everybody so well. Maybe in other people's eyes, I want you to be my girl-friend. but....but...

2--But you have had lily already? You should have told me about her, but you didn't.

1--OK... OK...Anyway. I will treat you as my best friend. I hope you can do the same.

2--Leave me! Go away!

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注解：
 
1.cheated欺骗 
2.admire欣赏  
3.treat对待      

===================================
译文：

1--玛丽，请冷静一些。

2--不可能。你欺骗了我。

1--不，听我说。我一直把你当作我最好的朋友。我欣赏你，当然你帮了我很多，我应该谢谢你。

2--闭嘴。

1--不，听我说。或许是我的错，我对别人都太好了，或许，在别人的眼里，我想要你做我的女朋友。但……但是……

2--但是，你早有莉莉了？你应该早告诉我关于她的存在，可是你没有。

1--好……好……我还会把你当作我最好的朋友。我希望你也能这样做。

2--离开我！滚！