It’s so unfair

I didn’t think my friend talking about how they haven’t eaten all day really upset me too much but it’s all I can think about this morning and I just keep crying. I don’t know why, I guess it’s because they kept saying it like it was a boast or something to be proud of even though they know that me and 2 other people at the party have struggled with anorexia. They know how I suffered, they won’t stop going on about how I barely spoke to anyone and didn’t go to school for a whole year, and yet they say they haven’t eaten like it’s something to be proud of. I don’t understand.