[He sighs again, shaking his head.]

That's not how this works, Frisk. Friendships don't exist because one person wants it and not the other. It has to be a mutual exchange of trust and love and... we lost that.

[They did. They lost it the moment Frisk revealed the truth about never caring about him.]

Even if I told you that I wanted to be friends again, it wouldn't change that you didn't want my friendship in the first place.