It's been a while months that you've never been come back that you sacrificed yourself from desmond for not letting him end his life instead you.

Desmond watching the horizon he's been quiet after you die as he's been waiting for you to come back for him, he was sitting the rock where you sits it every night, using the whistle call you made for him, impatiently and desperately waiting for a response.... but nothing. his eyes are filled with tears it was his fault for not saving you that you've sacrificed yourself from saving the world for him. he held tightly your scarf that around his neck reminding you.