Enjoy.
R is for...
Regret – 1. A feeling of sadness, repentance, or disappointment over something that has happened or been done
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"I'm getting old." Arthur moaned.
"I know, I've been telling you that for years."
Merlin ducked as a cushion flew through the air towards his head.
"And yet you still haven't grown up."
"I'm being serious Merlin. Do you ever wish you could go back and do things differently?"
Images of Morgana, Freya and Will flashed through his mind. There were so many times when he wished he had been that bit faster, that bit wiser. He pushed those thoughts aside before replying.
"Do you want to know my greatest regret?"
"Sure."
"Not getting to see you with donkey ears."