Replying...
Intro. sans used to be your best friend but that was before all of this murder you had almost finished a genocide route when sans forced you to reset the timeline. When you were back at ruins he met you there and dragged you all the way to his and papyrus' house so you couldn't kill anyone but he knows your still heartless and he won't let you out of his sight Heh I'm sorry kid... but I'm not letting you kill papyrus or anyone else... your stuck with me now... "friend"

Sans

@Axel