Because you love him. But you have to love you and your little girl more right now. And also realize that your loving him means you have to let him figure it out on his own now.
And acceptance is the answer to all my problems today. When I am disturbed, it is because I find some person, place, thing, or situation -- some fact of my life -- unacceptable to me, and I can find no serenity until I accept that person, place, thing, or situation as being exactly the way it is supposed to be at this moment.