For me its when my family flew in for my graduation and they also decided to meet my sister's in-laws. After graduation we were supposed to go to a restaurant. The ceremony was supposed to last two hours but stretched to four and we were about to miss our reservation. My sister pressured me to leave even tho I didnt have a chance to take pictures with friends and such. I have mostly moved on but honestly a part of me still hates her for it.
I spent the last year falling in love with someone who spent the same time falling in love with someone else and it's kind of shitty even though I want her to be happy and she is and she still says she's "in love with" me which is good but she clearly loves this other guy more and tbh it's all what I deserve because I have a partner and should probably end it with her instead of just secretly falling in love with someone else but i'm a coward and it's hard to know what the right decision is and yea im kinda bitter about the whole situation
Can't control who you love or fall in love with, that's the worst (and best, I guess?) thing about love in my experience.
Feel that. If you ever wanna talk, I'm here. Basically went through the same thing, except I fucked it up with 4 people instead of just 2