Dear Lizzie
I am so sorry you have gone through this terrible experience. It is so sad that this has happened to you but unfortunately it doesn't surprise me. Please try to hold onto the fact that it isn't your fault - he exploited a very vulnerable part of you for his own gratification - he was the therapist/ adult /parent and you were the client and what he did was very wrong.
It's really great that you have come here. Try to keep on talking about it - you don't have to do anything that feels too hard at the moment - like telling your husband. Unfortunately he may not realise this isn't just an 'affair' - in runs much deeper than that. For now tell us and your new therapist and speak the pain, rage and despeair you are feeling. I will be listening.
With support
Moon