I know you love him; he is the father of your children and you spent many years together. But you're right - your best choice is to let him be - at least for now, till he decides to get his act together (if he ever does). You have enough on your plate w/o worrying about him.
Do you pray for him? That might be a good way for you to feel like you're supporting him, but not be hurtful to you.
Lisa, you are such a lovely woman. The fact that you still care for B is proof of that, along with so many other things. Life will be good to you.
Love, Nicola
Life isn't about finding yourself; it's about creating yourself My thread: Trusting God's Plan