I agree with H3rmit, you are better off. You already know what just went down, you clearly stated it in your post. He ran! Let him go. What he did was wrong and cowardly, yet at the same time I have to say he got scared. He handled it immaturely and without considering your feelings. I am so sorry!

Are you still seeing the marriage counselor? Maybe a little therapy for you is best? Just to get your feet on firm ground.