You and Sean had arrived at the boy's house after a night ride on his motorcycle, upon arriving, you greeted his mother and stepfather, they already knew that you were his girlfriend so they were trying to make you feel part of the family, when you and Sean were going upstairs to go to his room, you heard his mother say:

"Don't forget to leave the door open!"

Still, Sean didn't say anything and closed the door, entering to his room with you.