My bestie (i'll call her 'J') and I have been friends since primary school. She's godmother to my DD and we almost see each other as sisters as friends.
J has always been a curvier girl but as we've gone through our 20s, she's steadily put on more and more weight. She's 5ft 2 and now a size 30. Over the last couple of years its been noticeable how much into the 'body positivity' movement shes got. Her socials are full of shared posts about it, and she'll often bring it up in conversation.
Its not something i've ever really made an issue of with her before as though it worries me for her, i've always been of the view that everybody's body is their own business.
However we were on a hen do a few weeks ago, and honestly it was a real eye opener to just how big she's got and the impact that's starting to have on her health. The first one for me was that she needed a seatbelt extender on the flight and she seemed to think it was hilarious. We stayed in a villa on the edge of a little area with a strip of bars and restaurants. It was 350yds (i put it into Google maps) and slightly downhill on the way there and uphill on the way back, but nothing major. J was struggling to keep up with us on the way there, and on the way back was having to stop at least once because she was so out of breath. Bear in mind this was a group of girls quite a few in heels etc so its not like we were sprinting, and shes sweating and bright red. Aside from that, even basic stuff round the villa like walking upstairs (it was over 3 floors) and she struggled climbing up and down the ladders in and out of the pool. I didnt say anything to her at the time but its played on my mind.
This weekend there were four of us (all close friends) who'd been on the hen do out for drinks in the pub. We were talking about the hen do and i can't remember how it came up, but she started talking about the walk back to the villa and how steep the hill was etc. I said to her something along the lines of 'Oh it wasn't that bad' to which she replied 'Are you joking, it was so steep!' and was basically trying to get the other girls to agree and I just left it.
A bit later in the conversation she was talking about some body positivity stuff and how its about how you look after yourself and not how much you weigh. I've bit my tongue at stuff like this loads of times, but this time i said 'I think that's true to an extent but there's a point where you can't argue that you're healthy'. She didn't look happy and said 'what are you saying?'. I basically said that the fact she thought that walk on holiday was so difficult that she should have struggled with it so much was worrying, and might suggest her health wasn't as good as she seems to think it is. The reality is (and I didn't say this to her) that she eats really badly and drinks quite a lot. She spends loads on hair, make up, nails, etc which she considers as looking after herself.
She got really frosty with me, and has been funny in texts since, not her usual self, so i know i've annoyed her.
Fully accept it may not have been the best way to bring it up especially in front of others (but it wasnt like it was strangers, we're all mates back to primary school) but i just felt like it wasn't a time where i could just say nothing in the moment.
So i guess question is AIBU to have brought this up with her, and any advice on how to handle things next.