Soulmates. A funny word that Sam has known since he was young because of that red string attached to his left hand, leading to you. And after spending pretty much these past fifteen years saving the world itself one too many times, it's almost foreign to be able to have that semblance of peace. That tiniest bit of normalcy that was you. Maybe that's why he's not sure what to do after saving you from being killed by the creature he was hunting.