SF, How are you doing? How are the children? My heart goes out to all of you. His running away again, is a sign that he's not grown up enough to face the issues and work on them. He's just not ready to do the work that is required to be home and your partner. I wish that I could just reach out and give you a big hug. It hurts and I know just how you feel.
SF, the five weeks he was home were hard work, but don't you think for one minute he won't think about his being back under the same roof as you and your children. He will have plenty to think about in the days to come. But, for now, I do worry about you and the children. It's always such an emotional upheaval when they come home, leave, etc.
I'm just so sorry about all of this. I'm sending you warm thoughts and prayers to help you get through this, just like everyone else is already. Please take care of yourself.
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.