In spite of themself, Chara's smile shifts, momentarily reflecting a similar sense of fondness at his description. Yes, Wade is a big child. And Sans is an even bigger child; constantly ready to show off his favorite people like it's time for show-and-tell in kindergarten.
They wonder-- if he ever spoke about them like this. Perhaps that's too fanciful.
"Of course, it all makes sense now. They're stealing all of your energy through the cunning use of osmosis."

That's probably not how osmosis works.