我的亲爱的朋友

Please translate the text below to Chinese

Today, my friend went on a travel for a few months and I miss him a lot.

今天我的朋友就開始幾个月的路程. 我会非常思念/想念/掛念/ 他. 思念 greater missing than 想念. 掛念 = worry and missing. All depends how deep your relationship is.

Why do I have this strange feeling when my dear friend leaves me alone??

為何[more poetically]/為什么[colloquially]当他離我, 讓我在孤独时, 我会有這样的奇特的感受?

What happens to us when we miss someone so much a lot??

当一个人会有這么深的怀念, 我们就会变成怎样?

I think it's because of the human nature of human being.

恐是人性吧!