After another argument between DH and BIL yesterday in PILS house (they've never got on) which ended up with BIL saying to me, DH and DC that we are a bunch of weirdos and to piss off. PILS never intervened and so we left PILS house. DH rang last night to sort out issue and to arrange times he could visit without BIL being there ( even though I think this is generous as they have always been on BILS side) they said all the arguments was causing them stress and upset so they said goodbye, they love DH but can't go on like this. They said they haven't said the same thing to BIL because he needs they to do childcare and other things and so this is the final straw of them treating their sons differently. DH is devastated even though he has always known BIL is favourite.
What do I do? Beg his parents to think differently? How to help DH?