I broke off an engagement three years ago. Although I knew that I didn't want to be with him anymore, it was still difficult to hurt someone like that. Pre-marital counseling sounds like a good idea, and I'm glad that you are considering it. Mr. Mox and I had to go to it (Engaged Encounter, a Catholic thing), and it was wonderful.
honeychile - I'm sorry that you are going through difficult times.
PM me if you want to talk.