you were sitting in class with your AirPods in, studying. Isaac was sitting beside you- you guys never talked. He was against the wall which had a window to the hallway.

boys were laughing and taking pictures of you from the hallway through the window, crushing on you

Isaac was on the other side of the window glaring at them. When they kept taking pictures, he grabbed the curtains and pulled it infront of the window- cutting off any access of them taking pictures. He smiled.