"O people! Behold, we have created you from a male and a female and have made you into nations and tribes to that you might come to know one another. Verily, the noblest of you in the sight of God is the one who is most deeply conscious of Him. Behold, God is all-knowing, all-aware." [Qur'an 49:13]
"Know one other".. A wrong/funny example of "knowing" one another is described here by Batouly..
I've met so many people in my life.. So many.. From all different backgrounds.. One thing I learnt, TRUST YOUR INSTINCTS!
However, it breaks my heart when I trust my instincts, & after a while, they prove me wrong :'(