Hm, you don't see such synchronized pettiness every day.

That's pretty childish behaviour, because ignoring events always means they just go away. While they're having their food discussion, I'd start having a discussion about upcoming wedding plans.

2 less people to call at the wedding.. Congratulations for the wedding

"I just feel like this croque monseuir would be much more improved with a different croque Madame beside it. Don't you agree honey?" "Yes this croque Madame in particular just smells foul, indeed. it's just that the cheese is low quality." "and it's personality is lacking" "and it's just not good enough for my precious croque monseiur."

Did your boyfriend do something about it ?

they're so mean! forget that!

You mean fiancee? Congrats on getting wedding ;) Don't let this stop you

Get married and don't invite them, pretend you sent them an invitation and it got lost in the mail.

Don't let an ole hag and asshat ruin your day- congrats - it's time to celebrate