I work in a reasonably large team of around 25, we all get on fairly well and no dramas however we all work across the UK at different sites, so there are some colleagues I see regularly in person and others just online on teams and perhaps a couple of times a year. Naturally, there are some I am more friendly with.
On Saturday, I had my 30th Birthday party. I could only have around 70 people which sounds a lot but I have a large-ish family, uni friends and I invited the 5 colleagues that I was closest to. We had a great time, they posted on social media some pictures of us/my party.
This morning I got called up to a meeting with my manager which I thought was about work but turned out to be about my party. She said that she felt it was unfair that I had 'picked' people to be invited, not at least invited the whole team and that I would encourage 'cliques' if I wasn't careful inviting some and not others. That a member of the team had messaged her over the weekend and said that it was unfair to not be invited and if it was a wedding, they'd understand but not a party.
Firstly, I thought Jesus christ, it's a 30th birthday in a hall and not Glastonbury, but secondly, I told my manager that I can be friends with who I choose outside of work and only had capacity for a handful of colleagues anyways. Manager simply ended it by saying that I should be more considerate to peoples feelings next time and she would be 'keeping an eye'
AIBU to think this is just utterly ridiculous?