Was texting a good friend back and forth the other day. Friend is is a bit overweight I guess, although it's not something I really notice or pay much attention to. But I know that they're uncomfortable with their weight and looks at the moment.
It was the evening and I had just finished a big meal. I was very bloated. (I have PCOS & endo, so I bloat a lot and can end up looking 6 months pregnant. It's very painful and can sometimes last a few days).
Anyway, they asked how my day had been and I'd said how I'd eaten too much and was really bloated.
They replied with:
"Whenever you say that I know it's all relative. You're still skinny and tiny. Then I just feel bad for actually being bloated because I've eaten too much and being multiples of your size.
Only say you're bloated to other skinny people it makes the rest of us feel like we're a Greenpeace project"
I replied a few times apologising and saying I was sorry, and that I was only saying it because I really was bloated and it was very painful at the moment 😕 It was just a random comment as I'm ND and often just say what's on my mind, even if it's not relevant to the conversation etc.
But I was quite taken aback at their response to me, and honestly was kind of hurt / offended at how direct they were, but now I'm confused - I obviously feel awful that I e offended them, so is making a comment like this a faux pas with someone who is larger than me? Does everyone feel this way if someone thinner than them says something like this? 
AIBU for feeling a little offended that my honest innocent comment has offended them?