One of my kids has a friend who has been round to ours 4 - 5 times, he's been to their house once.
My other child has had a friend round three times, and never been invited round.
With other friends it seems to work out equal in terms of offering and hosting (both my kids are old enough to be dropped off I don't mean where the parent stays too).
I don't want to stop my kids of seeing these particular friends but it's starting to grate... Would you say something? or just stop offering?
(BTW this does not apply to my single mum friends, never expect quid pro quo so they can have time to themselves!).