A while back I met someone through a friend, who I didn't entirely trust. It was just that uneasy feeling you get when you feel like something is a bit off. Over time, however, I got to know this person and came around and really admired them and enjoyed their company. That uneasy feeling gradually melted away.
Very recently I found out something, and this morning I realised that it proved my original gut feeling right. This would explain why upon hearing about what this person had done I was shocked, but wasn't all that surprised.
So, my dear reader, when you meet someone who for some inexplicable reason you just don't trust, heed that gut feeling and be cautious.