Commenters told the mother not to move in with him let alone pay the fees and warned that he was treating her like a cash cow.
But others insisted that all children should be treated equally if they're going to be a family and that their incomes are going to be joined once they move in together.
And some said that the debate was an example of double standards and that if a man refused to pay, despite being the higher earner, there would be an outcry.
Several posters said it was up to her partner and his ex to sort out their daughter's education. While some cautioned that her partner is a golddigger, another said the problem is clearly down to a simple difference of views on the family finances.
A poster suggested that her partner needs to work out a way of boosting his earnings rather than relying on her for everything.