Wow! What a prince - not!
1 he is not seeing his easy to care for child very much at all even now given his MOTHER has been picking up much of his slack from the sounds of things
2 alone couple time is a luxury most parents can ill afford and recognise is simply not possible while kids are young enough to need a fair amount of supervision still
3 your comments about maintenance are pretty ignorant and insulting to be honest. I suspect what actually happened was she went to csa cos he was messing her about. Even if not the amount stipulated by the csa is a MINIMUM amount. How much is he actually paying? Cos I'd bet good money he ISN'T paying enough to cover half the total costs involved in raising his son
If you are as pp stated ttc then you have several areas of concern (red flags) wrt his attitude to parenting:
A - they split quite some time before the child was 3 so likely when the child was a baby. I'm thinking it's like he couldn't hack the stressful, exhausting, full on days of baby parenting. He either bailed or was useless and she booted him
B - any chance he gets he palms the child off on someone else, even at this age when they're fairly easy to care for
C - his attitude to his responsibility financially speaking sucks
D - you're already doing his share of the mental load to a fair degree with this child that isn't even yours
E - what do you both think is going to happen regarding alone time when you have a newborn of your own?!
F - his working hours suggest to me he's the type to avoid being at home and playing on "I work so hard" to get out of his responsibilities. Does he pull his weight in other ways? Genuinely?
I'm guessing his ex isn't really a nightmare just she knows what he's like and as they're no longer together is not inclined to continue being his mug!
You don't know what went on before you were on the scene, plus you're mainly getting his side of the story.
I've been the 1st wife in a similar scenario, at first ex did all he could to prevent 2nd wife (a former friend and ow) and I from communicating in anyway and told a whole load of lies to each of us to deter this from happening. He was of course unable to maintain this and then we had one day in particular when he was unconscious that led to us spending time together again and talking and we unravelled a lot of the bullshit! After that she and I mostly communicated well and could easily spot when he was trying to do this again.
Among the things she (the person in your position op) learned were:
That far from preventing him from seeing dd I was going nuts at him keeping cancelling, failing to show or showing hours late for contact - he'd been telling her it was me cancelling last min and playing the "woe is me" card
That I was not holding up the divorce - which I had instigated - but that HE was sitting on various papers, I believe in order to avoid her push to remarry. Once she learned the truth on this miraculously he got on with signing, completing and returning various papers fairly quickly.
That far from me bugging him to pay "excessive" "extra" maintenance he didn't pay anything at all for the first few years. Indeed he had fooled his parents on this one too. Once they knew the truth this improved slightly for a short time but he never really fulfilled his responsibilities there. Dd is now 20, a few years back I calculated how much he owed in cm - it was over £20k!
Yet to hear him tell it to those he is around now (he forgets I know some of these people) I'm the evil witch who kept him from his child, demanded high amounts of cm that I spent on luxuries for myself and was jealously obsessive over him to the point of trying to prevent their marrying.
On the last point he actually propositioned me the day before their wedding and he has massively kicked off EVERY time he's even heard a rumour about me dating anyone.
So bear in mind that you may well not be getting the whole truth.