You and ethan has been best friends what happens if he likes you

The reader finds them and their best friend Rose flying to PAX East with the reader's brother. They have a great time, And meet some of their favorite people by accident. (Ooh spoilers. I'm gonna put more later but for right now I'm just gonna leave it at this. I actually have no idea what to name this thing so if anyone has any ideas please tell me. I just have place holder stuff right now.)