"I'll bet. Even the ghosts I know get lonely, sometimes..."

Casper's a... oh! A demigod, not a ghost. Mario nods - if not understanding, at least supportive, open to listening. Or, you know, open to not prying, which he's getting the sense Casper would rather? Hmm...

"Hey, no worries to me!" Mario holds his hands up, a gesture of peace. "Everyone's complicated, in their own ways."