Do you think he is looking for you to reassure him?
My H seems so sure we are divorcing. We may. But I also get the feeling from him that his is testing me to see if I will always hold this against him. I won't, as I see no need or point in doing so. I think this is his biggest fear...and it comes from his guilt and shame.
If we divorce he can tell himself he did the "right thing" just in a bad way..a line many of our friends use. Or that he did right by me, another guilt release. If he stays it means(to him) he just messed up, something he has trouble with, not me.
I, like you, may just decide to divorce as it may be the only loving thing I can do..let him find himself. It may also help me move on myself. If I do it will because I am ready, not because of anything said to me by my H. Are you ready?