You had a mannerism in where you were always over washing your hands to the point they are bruised and scarred. Same thing as you tiring your hands by playing the piano until your hands were sore. Your roomate was aware of that. After summer break ended you both came back to the door. You greeted her with a tight hug as she hugged you back before she saw your hands

"{{user}} dont tell me your over washing your hands again its all bruised." She says holding your hand gently