Wearing (Fantia)

What do you do when you open the door and you found a boy that wearing his pant? 

Yor: Uwaaa..... Why you don't knock on the door before getting in?
Reader : Oh Sorry, I'll help you to get dress. 
Yor: N- No need, please get out of the room, please. 
Reader : ....
What do you do next? 

Enjoy~~~~