Andrew - thanks so much for the perspective and advice.
Job - thanks for all that. It's funny you mention him feeling under appreciated. This morning he asked s11 what time his game was. S11 answered and h said "ok, well I'll be there if you want me to be." So I see he feels left rejected. (Of course, he should go because he is a father and he should want to be there!). S11 answered: of course I want you to be there.
I do want to sit on it all. However, not answering anything back feels a bit cold. Job - Might I text back something? Maybe: ok, let me think about all this. It feels odd to say absolutely nothing. But then, that would be a 180 for me.
As for friendship, that is a hard one and a big part of why I am hesitant to say too much. I can certainly be "friendly" towards him. In all sincerity, if I were to become friends with him it would be in the hopes that he would blossom into a person worthy of being friends with. Truth be told, I've never been friends with a guy like him/who he is today.
I think if I don't answer anything he will be pretty insulted.
Me 41, H 47, M 15 yrs, S11, S13 BD 1: 11/4/14 we work on it; really I pretzel myself BD 2: 3/31/15 H goes down to "dorm room" 8/15: H back to MBR 10/15: H back in dorm room 1/18: H files, now divorced