"OH, SO YOU'RE ALREADY FRIENDS?! Pardon the GIANT GRIN on his face. GOOD. VERY GOOD! THEY NEED MORE OF THOSE. MAYBE IT'LL HELP BUILD SOME CONFIDENCE IN THEM."

If enough people befriended them, their poor self-esteem would surely heal, right? It made sense to him, anyway. Frisk's own friendship certainly had helped Papyrus.