Usually when someone said they needed to talk, it wasn't a good thing. After another batch of dreams, Arthur woke up and began to rack his brain, trying to figure out what it was Merlin needed to tell him. Did he know about Guenevere? Was she here?
Thankfully, Merlin arrived early enough that Arthur didn't need to torture himself very long. He opened the door and was relieved to find Merlin smiling. "Oh no," he said. "You didn't go shagging our pal, Jace, did you?" He didn't expect Merlin did, but it was fun to tease him anyway.