Get a 
this may be very long
Ex and I have been seperated and divorced for 10 years, we have three children who are now 23, 18 and 15. I have been remarried 7 years, he lives with his fiancee, an ex nurse, whom he has been with at least 8 years. She has children and grandchildren. He is 60, I am 48. This is not in any way, shape or form an amicable split.
He used to see the children one evening in the week and every other weekend, this has dropped off over the last few years, he had never been the type to ring them or text them during the week not even on their birthdays. They all describe him as 'weird'. His fiancee seems to have no contact with the children at all, she was never there when they were there and when she was there she never really spoke to them. In the last few years the weekday visit became taking them out for tea (just the youngest two for the past four or five years and then in the last two years just the youngest)
He hadn't seen any of them for three or four months and then on ds2's birthday in November, five cards were pushed through the door, ds2's birthday, dd's birthday (December) and all three of their Christmas cards. When ds2 realised this meant that they weren't going to see him for the rest of the year he got a bit upset so dd rang him and told him that he should make the effort to see his son, so he took him out for tea.
Just after this his sister died, he said that he wouldn't go to the funeral so I was invited to go with the children. It transpired that the fiancee had sent a letter to his sister's widower explaining that he had Parkinson's disease and that he couldn't do anything for himself and was 'his own worst enemy' about it, the letter asked that it not be made known to ex that she had written as he didn't know. Ds2 pointed out that this was a pack of lies as he had picked him up and driven him about the week before. Dd went to see him to find out what was happening, she was a bit pissed off to find out that her dad was ill from someone else, and was told by him that the letter had been sent because he didn't want to go "I didn't bother with her while she was alive, why should I bother now she's dead". This sort of sentence is very typically 'him'
Perhaps now is the time to give up on the and move onto the 
She said that he wan't good at all, very shaky and looked very old. My sympathy was jsut about to kick in when she said "oh and he asked me how did it feel to come from a broken home" Git!! She doesn't come from a broken home, my home isn't broken, it was when I lived with him!!! 
Anyhow she arranged to pick him up today for lunch so that ds2 could see him (Ds1 was on a night shift last night and so couldn't go) I've had a text saying that he is very bad, he can't fasten his seatbelt or put on his coat. Why hasn't the fiancee gone with him if he is in such a bad state? What about the children? What effect is this going to have on them especailly as they have been practically estraged from him for the past six months.
I want to feel sorry for him and sometimes I do, but he was so awful during the last few years of our marriage as I said in the opening title I have very mixed feelings about it all.
Gold medal if you have got to here! thansk for reading my outburst.