When it feels like your heart is broken into a million pieces..how to cope?

I recently got some news about a someone I care very deeply for committing the most of horrible acts. Not only did this break my heart, shattered it, really, like a glass vase on the floor, but questioned my reasoning as to whether you really know someone or not. Physically, I haven’t been right since, suffering from a stomach ache and a headache, severely depressed and helpless, my fingertips ice cold. My body is starting to shut down and I am beyond tired. The worst is that I can tell my friends my feelings but not the cause of them because this is so terrible. How do you forgive someone their faults and love them unconditionally when you know what they have done is so incredibly wrong? Work is suffering because I am so distracted. I even tried to zone out by getting a pedicure – but it did nothing more than give me more time alone to think and re-think. To top it off, I have family in town and I have to put on a brave face as soon as I get home and act as though nothing is going on since this isn’t broadcast news, but somewhat private between a select few. What I would give to go home and shut out the world under the covers. I thought that by perhaps writing this out it would release some of the pain and pensiveness I simply cannot let go of on my own. I have had fleeting moments of this pain in the past, but without as much as intensity or most likely, not for as long. Time will tell. We have all survived failed relationships, broken friendships, the loss of a loved one. We cope, we move on. It is these things that make us stronger in the long run, I believe. But how do you cope with the fact that this person that you love so much is sick, mentally ill, off the planet and in pain and all along you saw none of it. How can someone be so oblivious? How can I be so oblivious? I take solace in the fact that this person would never hurt another physically, but wonder where he’d be if this wasn’t broken out in the open now, say in five years or even ten? It pains me a great deal and I cannot stop the scenarios from replaying themselves in my mind over and over again. I want to reach out and help, however, I am not qualified. The helpless that washes over me is like a tidal wave. I want to rescue, but know that this wouldn’t really be helping at all, would it? I have become withdrawn and don’t really want to talk to anyone. I fight the urge to cry and the littlest things set me off. I long for the day where the pain isn’t as bad.