Who is BU? Non resident parent giving ex money to take child on holiday

[TreeFu]

My friend is engaged to be married, she doesn't have any children yet but is step parent to her fiancé's DS and they're also TTC.

Friend has fallen out with her fiance tonight because she heard from a third party that her fiance is giving his ex £400 so she can take their son on holiday with her, and he kept her in the dark about it.

Her fiance then lied about the amount he was giving his ex when my friend finally asked him about it, he told her he was giving £200.

Friend asked the ex how much he was giving and the ex said no its £400.

Friend asked fiance why he'd lied and he said it was because he knew she'd check up on him

Friends fiance said its nothing to do with her what he gives for his son, but he didn't think its fair for his son to miss out on another holiday because his mum couldn't afford to take him (she recently went on a different holiday and left her DS behind to stay with his dad and my friend) and if friends fiance wasn't going to pay for his DS to go with his mum then she wasn't going to take him, apparently when deciding whether she can afford a holiday she doesn't factor in her DS..

Who, if anybody, is being unreasonable?

“Still not sure why he couldn't take the child on holiday himself instead of funding him going on holiday with his ex.”

Because perhaps a caring Dad can see that it is good for his son to have holidays within his Mum and that maybe Mum has been left poorer after the split than he has.

Because we all know how common that is. And he has the luxury of sharing his household overheads with another wage earning adult. Harder when you are a single resident parent.

Because perhaps a caring Dad can see that it is good for his son to have holidays within his Mum

Surely a caring dad would also see it is good for his son to have holidays with him? And of course it isn't always the case that the mum is left poorer. This mum seems to have regular holidays already.