When you talk try to pre-screen (if you will) what comes out. All random thoughts do not need to be verbalized. If you do say or do something that falls into an old pattern you are trying to change, acknowledge it. Something really simple like a smile and "I'm working on that". Then let it go.
It does sound like the two of you did work it out pretty well.
Has he tried to talk to the girls about whatever they're feeling? It's hard at best, harder when you feel guilty. He'll have to find a way to connect with them and he will in time. Remember that's his job, not yours.
