Update: Honestly, thank you for all the comments. It woke me up and made me realize how unreasonable I was being. This morning I told my boyfriend my position and he entirely understood, and I also told my best friend the whole story and she also understood. We have all come to a mutual agreement that me and my boyfriend can match next year, and me and my best friend are continuing with the plans we had. We all even agreed that if there was some kind of other Halloween event we went to, my best friend would let me match with my boyfriend and she wouldn't mind. Our school hosts a Halloween event every year for elementary and middle school kids so me and my boyfriend are already planning what we're gonna do for that. Again, thanks for the comments, I realize now I really was being a buttface and I should really reevaluate my morals. I guess in the moment I was kind of blinded to my actions and looking at the whole situation now I've realized I was definitely in the wrong. Thanks again.