相性　Compatibility

初対面でも、この人合うなって思う人は、だいたい自分と近い人で。
とってもいい人で、付き合いが長くてもなんとなく自分とは遠いなと感じる人もいる。
それが相性ってものだと思うけど。

If I feel the person who is good for me at the first time, he or she will be close to me.
Even if the person is a good person and long relationship with me, I sometimes feel him or her far away.
That is called the compatibility, I think.