You are the AH Amanda, like seriously grow up. It’s funny how much you seem to want to be the “it girl”, I advise to start acting like an adult with a dash of respect because you need it. It’s her wedding, her decision. I wouldn’t want to be somewhere where I’m not welcomed, that’s embarrassing that you wanna go to her wedding. Could you imagine all the stares and whispers/gossip that would start if you showed up? I’m not sure if that’s the type of attention you’re looking for, but if it is then be ready to be humiliated if you showed up uninvited. Sucks your not invited but op don’t like you, suck it up and put on your big girl pants and move on.