I stayed in the bathtub most of that first month -- 2 years ago for me.....
I had to get counseling outpatient at a treatment center....There were several women in my group for the same reason-- cheating spouses upheaving our lives.
Just because he is willing to get help, doesn't repair the damage like the snap of fingers.
Heal at your own pace, process all this at your own pace, do not hide your pain from him,,, he has to see what he has done to you.
Get counseling for your self,,, it helps so much....I also got free counseling at the domestic violence center because emotionally abusing (cheating) is domestic violence.