What would you do

You cant tell the truth
but yet you cant tell a lie
what would you if you had a secret you held so deep, then you told someone you thought you could Trust? then you found out they were never your friend just some one who didn't care about anything you say,did, or thought.

what would you do if you found out that the person you loved so dearly then you found out something you didn't want to know, like they never really cared or they slit, or even they have been cheating on you.
What would you do?