I scored tickets for Oasis and my brother had something come up and can’t make it. I asked my sister if she would be able to and she said she wasn’t sure so I asked a buddy. My sister came back and said she can now but my friend already said yes. I would definitely rather go with my sister since we’re big fans. AITA for telling my buddy that I’d rather take my sister? I feel bad since my gf and I are going to his wedding next month lol