He was right, that wasn't very helpful. Though it seemed Morgana had taken to gloating since her... betrayal.

"She's a very dangerous sorceress, so yes, I'm worried." It wasn't the entire story of course, but if Merlin wasn't going to remember this on his own, he'd just have to fill him in on the important bits. No need to go into complicated past relationships that, apparently, meant nothing now that she'd turned to the use of magic to get her way.