It's apparently a take away ! not a meal out in a restaurant !
so they are all eating in, probably as usual, it just means someone is not cooking !
The Op has much much bigger problems / issues than who is paying for a take away !!!
If the boyfriend drops dead tomorrow, she will be homeless as she has no rights to live in the family home.
The Op didn't have her own property when she met the boyfriend as she shared a rental with a friend.
The Op has moved into the family home, apparently the adult children still live there, why didn't they live with their mother ?
Children from a divorce usually live with the mother, she is still alive ? I guess as the Op has said the boyfriend is divorced and not widowed.
If this was the original family home and the children's mother lived in it once, where is her share of it from the divorce ?
Did he pay the x wife her share, hence the fact that the house is still mortgaged ?
Or, does the x wife still have monies to come from the sale of the former marital home...
Why is the Op paying rent to him ? is it towards his mortgage.
or is she actually paying as a lodger - thus no legal rights...