A/N: These are still romance drabbles. I am not shipping Gaius/Merlin! There is, I believe, a very different romantic undertone. Just wanted to make that clear :)
The curtains of the physician's chambers twitched, as did their occupant's eyebrow.
Eventually he detected what he was looking for skulking along the streets.
Gaius slipped into bed and waited for the intruder to intrude.
"What time do you call this, Merlin?"
"Argh! Don't jump out like that!"
"Is there some monster about that means you need to sneak off at this ungodly hour?"
"No..."
Gaius' eyes narrowed.
"I was… at the lake," Merlin mumbled, growing evermore uncomfortable under Gaius' glare. "Visiting a friend."
Gaius decided he was going to be keeping an eye on Merlin from now on.