Well I've read most of this thread now, and I must say there is an obvious consensus about this guy - that he's a total waste of space, a cocklodger, a disengaged parent, a selfish manchild, etc.
I'd like to offer another perspective.
Only kidding. This guy is all those things and more.
This comment of OP's, a few pages back, really struck me...
Holidays- I said DD wants to go away for her birthday, can you get time off and would you like to come? He said yes, I booked it there and then as was in travel agents and he hasn't offered a penny nor will he.
There is so much wrong with this... why does he not know, or think about, what DD would like to do for her birthday anyway? Why do you not know if he might be able to get time off? Why do you say would you like to come? You are planning, unilaterally, a holiday for you and your family and you ask your 'partner' almost as an afterthought, because he is so far on the periphery.
It's crazy. This is not a partnership. There is a family here, but he's not part of it. You are a single mum and you need to get on with your life as a single mum, stop having any hopes or expectations of this deadwood.
And the fact that you had noro and he asked if you were 'horny'. Ugh.