I'm upset about being single on valentine's when my coworker recently broke up with her fiance.
Did she put a lot of her work on you?
No, I'm upset because my coworkers was fine for work while I had too many things to do on that day.
It is upsetting to see others celebrating when you are alone but it is not good to be judging them for not acting like you think they would. Not everybody reacts the same way to being alone.
I know they would react this way if they were in my position. They should acknowledge my pain.
Those comparisons don't work. Situation comparison between different people doesn't make sense.