DH old University friends and partners who we see a few times a year (3/4 couples and children) Usually we have a nice time but recently one particular (dw mainly) couple really really have started to get into this 'it was so much worse for us', I'll give some examples.
I revealed prior to Ds I'd had several miscarriages, response was 'she had had some but were more weeks than mine so mine didn't really count 😔"
Ds not walking yet hes over 19 months but has been discovered to have significant different leg lengths. We have a referral in a few weeks.
Obviously there DS had exactly the same but the condition was much worse and they needed a specialist on Harley Street! 
And don't ever bring a birth story up, she was in labour for a week and a half, had to be transfered to many different hospitals etc
So whatever the story good or bad they have to out do you in some way, I don't use social media platforms much apart from here but when I have in the past its #makingmemories and their DM and MIL commenting constantly. Maybe this behaviour stems from them?
I'm a bit older so maybe I'm just a bore or don't care about the same shit.
We are due to see them in a few weeks and I'd really like to not go.
Sorry for the ramble, it's off my chest now