Can I throw-in a question I'm sure we've all heard and thought about. Does a true friend tell a person the truth (as they know or believe it) OR does a true friend tell a person what they know the person wants to hear?

There have been many times in my life when someone whose friendship I value has asked me about something but rather than saying what I honestly believe and want to say, I won't say anything at all...and then I feel somehow dishonest.