Not so much of an AIBU but am posting for traffic.
A so called friend has gone to my boss because I said something negative about work on FB. Where I work takes that sort of thing VERY seriously. I don't think what I said was that bad, I expressed I didn't like my job or the team I work with (some of them are ok). I didn't say anything bad about the organisation itself but when asked, I stupidly said where I worked and have "damaged the organisation's reputation".
I am more pissed off that a "friend" has said something and actually screenshotted the post to show my boss.
Just a friendly reminder to be careful who you trust and becareful what you post on social media.