求一篇英语作文关于跨国婚姻，很急！谢了。。

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One of my friends, who is a young woman, got married with a foreigner in Australia. But after a while they were having a lot of difficulties and problems. Anyway, they eventually decided to get a divorce. But at the moment she moved out of her exhunsband's house, the Australian man shot her a sentence as a good bye advice. He said " you should get mouth shut and lips open all the time". My friend left the house and the Australian man forever. However hard she tried to forget the past marriage, she was just not able to dismiss the last word he said to her. Uptil today she is still not clear what he meant by saying that. She thought if she did just as what he instructed she would have saved her marriage. She asked many people including me the exact meaning of his last word" lips open and mouth shut". To her dispontment, we all failed to satisfy her with the explanation.

So can any one of you here give me an explanation of what that really means?