the person above me is correct
Who invited who to dinner (in general it is the person that does the inviting that pays)How do I convince my parents to let me sleep with my boyfriend?
Whose idea was dinner?
That's who should offer to pay.What do I talk about with my boyfriend's parents?
they'll aspire you for it.
At least offer once,
then if they offer, say
we'll pay next time.
Well If you asked them out for dinner then you should pay but if they asked you then they should pay but just to be nice tell them you will pay but if they offer agian say we will get you back next time :) .