I worked all day on New Year’s Eve while my coworkers partied

Today it came up that one of my coworkers talked with my boss at “the New Year’s party.” I asked, what party? There was a pause. Then they explained there was a "super last-minute" party that got texted to someone on the team the day of New Year’s eve That person forwarded the invite around to apparently everyone (literally) but me. Apparently it “wasn’t a secret or anything.” But… how was I supposed to know? I almost cried on the spot. I’ve been pulling 60-hour weeks. I was one of two people physically in the office on New Year’s Eve. I worked nine hours that day. I had to run a fitting (I work in fashion) that took four hours, while two other people on the team videoed in from home. And no one thought to even ask if I wanted to go. I had to play it off in the moment so I didn’t make things awkward or hurt this person’s feelings, but it fucking hurt. A lot. Not a secret, but clearly not public knowledge either. I finally let myself cry when I got home. It made me feel unappreciated. I don’t think it was malicious. I really don’t. But… fuck, man. It really freaking hurts. **update** So another employee who works on my bosses other business, and a good friend, also convinced me to chat with my boss. My boss apologized for his massive absence and wants to have a face to face with me next week to clear the air. He acknowledged his absence has been a bit of the issue and wants to talk about what he can do to make sure I feel supported going forward, make sure I don't feel secluded, and also chat if there's headcount that I can hire to make sure I'm not feeling overworked. I feel a lot better and I'm very optimistic about this conversation. Thank you for the comments, I guess at something I swallowed the corporate pill and let work takeover my life. I'll be taking advantage of having my first real weekend in a few months.