I am quite a few years past my D, my exH being married to his AP for 5 years, have realized there are actions committed in M's that can be as bad as infidelity.
Ginger1,
What types of actions are you talking about? Do you mean breaking up the family?
What I mean is marriage is way more than just staying faithful through one another. There are acts you can commit that are just as hurtful. That are just as damaging that will break trust all the same as infidelity.
Emotional abuse is one of them. breaking one you love so badly they feel completely unworthy. It happened to me, I've seen it happen to others that are close to me.
It is an awful betrayal. And takes remorse, wanting to change, and TONS of really hard work to repair the M and damage that has been done by it. Just like when there is an A.