Dirk just let Dave go. He wouldn't push himself on him.

He turned to walk the opposite direction. His world's versions of Dave and all of his friends were dead, so when he thought about it, it made sense that Dave's world's versions of Dirk and his friends were, too. Not that he was just going to just up and ask Jade or anyone else about their guardians.

Yeah. Don't recall it all that clearly now that the charm is off. I just know in a textbook sort of way what happened, without any real emotional connection to it.