One of OHs associates (I refuse to call him a friend) let's call him Dickhead 'cause that's what he is, is is one of these. He's very happy to tell people that he pays nothing towards his first child, because he not 'allowed' see her.
The fact that when he left them he moved nearly 350 miles away to be with then then OW (who didn't know she was the OW) and refused to even met half way had nothing to do with it...
He complained that she wouldn't put the 4 year old on a train or a bus alone. Seriously he thought this was a reasonable request! He stated in shock that his ex expected him to either met half way or pay for her ticket. Why should he have to pay to see his child after all he'd be feeding her all weekend.
When one of the lads pointed out that the little girl needed feeding housing etc 7 days a week every week he was told to fuck off, he didn't have kids he didn't know how hard poor Dickhead had it how much he missed his LO.
This all came out at a social event which was the same night OW found out she was the OW, he'd basically been living a double life. Give her her due she dumped him then and there.
That was a fun night.
He's since had another child with a different partner. When the subject came up again, brought up by him, she was vicious about defending his reasons for not paying, calling ex-wife all sorts even though she's never met her. Basically parroting what he'd said. Claimed if ex would be reasonable so would they.
Sadly she may be about to find out so how reasonable he may be as he appears to be up to his old tricks. Of course she may decide to carry on with the relationship, but looking at his track record his usual pattern is to line up a new woman before walking away without a word.
And while I thought she was very silly at the time I think she's going to learn the hard way, and worse there's going to be another child growing wondering why thier father isn't bothered with them.
She thinks their relationship is different, it maybe, problem is he still the same Dickhead.