Disappointing colleagues

Today, while I was in my office, I was wondering why people are so hypocrite...It's a fault I can't bear. And I'm so disappointed because it is a fault I discovered in a man I admired a lot!
He's so clever and it's interesting to talk with him...but he has got this terrible fault. I don't want to be the kind of person who can't bear anyone and anything...but it's a fault you can get over it. I don't know why he lied to me...probably for not hurt me...
But the truth is that probably I won't work for his project anymore... But I'm sincerely not disappointed for that...because I hated that kind of work ...so mega-boring...and I understand that they are saving money and I'm the newcomer so...no problem!!! 
But please, say it to me....don't allow me to discover it by other persons..
You are the technical head...you have to say it!!! Why do people like technical heads or program manager lack the courage to say the truth??? I think people who want to be a manager should be very clever and corageous, expecially in a period like the one we are living now!!
I can't understand why he didn't say it to me...I wouldn't cry or get angry for that...I'm not that kind of person!!!
But I think that truth generally is in the middle....so probably it's also my fault...probably I seem just that kind of person!!!
Don't know!!