"I don't know how to get home!" Rosco complains. "Even if I did, I couldn't leave Flash behind. She's my companion and really loyal.

Rosco considers the offer and nods, reluctantly.

"Well, if you know how to get back and forth, I'd be honored to visit, but I gotta bring Flash, if we'll be gone more than a couple of hours. She gets too lonesome on her own."

He means, of course, that he gets too lonesome, without her.