Painful Truth or Comforting Lie?

Have you ever been in a situation where you have a choice to tell the truth to a person who will get hurt by it or to comfort them with lies? What did you do in that situation? If you had a choice, would you always want people to tell you the truth although you know that truth would leave aftereffect on you or choose the truth no matter how would you feel knowing it? 

It looks like an easy question, most of us would immediately say that we would choose to know the truth no matter what but do we really think so? Maybe a life in a lie is not such a bad life, actually it might be better than to live in cruel truth. We often make our imaginary worlds in our heads and go there when we feel low or hurt by the real world we live in and we don't let anyone in that imagined world because we know other people would make us realize that doesn't exist. But we want it to exist. Isn't that the same as believing in a lie although deep down you know it is simply a lie but it makes you feel so comfortable to think of it as the truth?