*First of all, NO, children do not have the absolute right to have both parents available 24/7 - who on earth actually believes this?? Parents have other things in their lives, like jobs and family and friends, they are not slaves.
Secondly, nobody has said she can't move on??!!! Just that she can't demand pre-arranged Christmas plans with her ex's family be changed to accommodate her wish to celebrate Christmas on Boxing Day when her bf is there. No issue with her asking and I'm sure they would have swapped happily if it wasn't for them already agreeing to spend 26th with DH's family.
I know if it was OP on here saying "My DH is pissed off because his ex won't cancel her family Christmas plans so that we can celebrate together with our respective children on that day" you would not be supporting that Getawaywithit and neither would you Tattler2.
The mum has left it a bit late to make a change this year, that's all. She can celebrate altogether with her bf and the children later in the week, rather than on Boxing Day when she was never due to have the children as it is.
Next year I'm sure there will be no issue with getting in sync with when her bf has his child if it's agreed early enough. The only problem is the plans that are already made based on the existing agreement this year.*
Well said *LittleMysSister
In this case, this is not a gendered issue, and no children do not have a right to 100% of their parents time 🙄
All parents arrange things around when they expect to have their children and otherwise, including basic things like work and hobbies. That simply becomes more complicated and more in need of extensive planning when the parents are seperated.