(You're Stan)

you and Wendy is on a date while Kyle was spying you both and was really angry.. He mumbled to himself

"You're mine Stan Marsh. Mine and only mine no one can take u away from me. "

hours later when you went home and so does Wendy, Kyle followed Wendy , and later on Kyle killed Wendy and threw the body on a lake and then Kyle washed the blood off him

(Don't mind my grammar lmoa)