OP, you sound lovely and sensible.
Your children's education comes first, as simple as that.
Being on the same page re money is critical in a relationship.
So many people underestimate the cost of retirement, it is very expensive.
Nothing as miserable as being old and not being able to manage to have any of life's comforts.
My friends friend met a lovely single man at a golf tournament and they started seeing each other casually. He worked, had a nice small house and she was very fond of him. He has led a very interesting life, loads of travel on different continents, lots of great experiences and stories.
Two years in he tells her he has to move out of his sisters house as she needs to sell it to fund her childrens education, and he suggests moving in with her.
She was stunned.
He has a tiny pension and will definitely need to keep working. This woman has a lovely home and is retiring on a very good pension. She has plans to enjoy herself. Him moving in and her subsidising him was not in her plan.
Her two daughters feel very strongly that he shouldn't be moving in.
He is very hurt as he's in love with her and thought they had a future together.
Upon hearing this I quoted MN to my friend "no man more in love than one needing somewhere to live".
She has told him she doesn't see herself living with anyone and he feels very "let down" by her.
I don't see where he gets her obligation to house him from.
They are taking space from each other at the moment but she knows she needs to be sensible much as she dnjoys him, she really doesn't want to share her home in these circumstances.
Head above heart in such matters IMO.