Am I the A-Hole for cancelling my partners birthday party, I planned for him?

Anonymous
My partner and i have been together for 2 years, his birthday is coming up. I planned a cake (got it on reservation), placed a reservation at the pub for dinner. I had no idea that he made plans with others to go to another place, i found out by someone else that he won't be attending what I've planned for him, as he will be with others that night. I cancelled all the reservations i made and obviously i wasn't invited, cause no one actually in formed me. Im the kind of person that “if you're not invited, you dont go”. So i won't be going, I’ve actually texted my manager and asked for work that night and he said that it is fine. So ill miss the whole thing. Am i the A-Hole for doing this? I feel kinda guilty, but i wasn't invited to the dinner to begin with
Am I the A-Hole for cancelling my partners birthday party, I planned for him?
15 Opinion