I want to follow up on this. I talked to my T about this and she pointed out that some of my fear and guilt is based on what I have seen and experienced with marriages (my parents fought a LOT and divorced and still fought afterwards, and my dad and step-mom also fought all the time until they divorced). She reassured me that she and her husband have a really great relationship and I am not hurting her or him. I guess that helps a little bit. I do still feel guilty about it, but not as much.