Libby, Sounds like your home has become a safe haven for your h. I hope you remembered to thank him for doing the work around your home. He needs that affirmation.
I suspect he feels that you are at peace, therefore, he is too. He feels comfortable coming there and spending time. This is great! Keep up the good work.
Yes, even if he won't admit it, he's going to miss you and the kids while you are on vacation. This will be a good time for him to focus on himself while you are away.
You both are traveling different paths...but who knows where they will meet up...once again.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.