The redheaded boy must be demon possessed and you and the other boy push him out the window

From Create Your Own Story

He is in fact possessed by whatever is in that room, but you shall never know because just as you pushed him out the window he grabbed your arm and took you down with him. you fell so fast you don't even remember screaming. As for the poor blond haired boy... he was eaten by the monstrous "thing" in the room.

On another note it would make perfect sense that the blond and red haired boy died, for they were never given names and in Greek tragedies the characters without names always die. It is their fate and it has suddenly become your's. GAME OVER