Give Me One Reason...

You cheated, and lied and know I have an envelope full of the messages on my windshield from someone who knew. What do I do now? You never hit me, used me, forced me to sleep with you or took money from me, but this hurts and I don't know how much of this pain I can sit through. The things you said to her while you were sitting next to me is sick but the fact I believed your lies is even worse. I wish I knew how to ask...