Going downhill fast

I am sitting in my office right now, and the tears are running down my face.  How could someone who loved me so much say and do such terrible, devastating things?  I truly feel like a broken man who has been damaged for life.  Do I stay and face the pain, knowing that my wife did the very thing that I have feared worst my entire life?  Somehow rebuild trust after all the lies? Do I leave, knowing that I am forever changed by this?  How will I put my trust in another woman?  Will she be punished for the mistakes my wife made?  Am I destined to be alone? Sometimes it just feels like I have lived my life, and now it is over.  I wanted an escape from childhood abuse...  a woman who was kind, loving, honest, trustworthy instead of sick and sadistic.  Someone whom I could finally feel safe to put my love and trust into.  I found that, and yet she still betrayed me.