AITA for canceling my girlfriend's birthday trip after she dumped me in front of her friends?

"We talked, and we've decided you're not the guy I should be with," my girlfriend announced from across the table while looking at her friends. I said, "Thanks for making it a group decision," and walked out. Before I even reached my car, she started calling. Not once did she ask how I felt. ---------------🦖D - Stories🦖--------------- #reddit #stories #redditstories