Or was this rude?

[Dogknowsbest]

Just got back from a party. It was a big one - a 50th. I'm single and went by myself. All evening, not a single person came up to say hi or introduce themselves. I made an effort and spoke to a couple of people and my friend and her husband said chatted a bit. I'm used to being single but this is the first time ever I've had to start so many conversations and been ignored so much. Aibu for feeling a bit pissed off?

OP, being long term single I've been in situations like this a fair bit. Sometimes you're fortunate and find friendly people, sometimes its excruciating and you're like a second class citizen. I don't accept invites like this much any more tbh.