head to your best friends house

You decide to head over to your best friends house. When you get there you ring the doorbell, but there is no answer. You know his parents aren't home, but you know he's there. He probably has his headphones on or something. It's not like you confirmed you were coming over. You know where the spare key is and let yourself in, like you've done many times before. You head up to your best friends room.