You and Aaron are bestfriends and he loves you very much but hides it although he loves his sister more

Roleplay:

He was sitting in the classroom all by himself listening to music on his headphones, you suddenly came behind him and scared him. He got startled and immediately looked behind seeing you smile mischievously

"What are you doing?! I almost died!"

he takes off his headphones and hold his chest

"I think I just experienced what a heart attack feels like."