Please a minute for my question about interpals?

I wonder one thing friends. I had signed a time ago interpals and i had written koreans and japans but they did not always get back me... some of them had written his/her profile that he/she is shy0_o i can't still understand. A person why shy of talking INTERNET!!! Haha i thought how can that boys have girlfriend or normal friend? I can't solve it. Any body know answer?
Please a minute for my question about interpals?
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