Okay, here's a two-shot based on today's episode. Enjoy!

Summary: Cal finally decides to tell Ethan about their biological parents on Christmas Day and he soon regrets telling him.

Cal officially hated Christmas. Not because of the annoying tunes repeated year after year or the amount of drunk people entering the doors of the ED endlessly. It was because he had to work on Christmas Day, knowing that he or his brother had a chance of inheriting a incurable disease from their birth mother.

He spotted Lily yawning, Jacob flirting and Ethan working. A typical Friday. Apart from the fact that it was Christmas Day and some of them had to work instead of spend it with friends and family.

He tapped Lily on her shoulder, waking her up from her slight slumber. She blushed, clearing her throat and picking up a file of patient notes to file. He then watched the clock tick by until the end of his shift at 2 PM. That should give him enough time to run over to Tesco and buy a ready made chicken for him and Ethan to share on their Christmas evening. Probably stick some of his favourite movies and songs on, butter him up and probably ruin his life after. Yeah, sounded like a plan.

Sighing, he walked over and called for his next patient, quickly dealing with the young, flirty blonde before moving on to a male patient which he was thankful for, not that he didn't mind the flattering.

An hour has passed by. 12 PM. Two more hours to go.

Cal spotted Lily and Ethan talking privately in the corner before they shared a long hug and probably season's greetings. He watched as Ethan's eyes brightened up at the sight of a present being thrust into his hands. He dug deep into his pocket and handed a small gift box in return.

'Merry Christmas', Cal thought to himself, resisting the urge to roll his eyes as Ethan had yet to give him his own present. He decided to make himself useful again as he took over from Connie to deal with her patient as she caught a call from her daughter who had probably woken up, time difference.

When he was done, he found that his and Ethan's shifts had ended. He met his brother in the staff room, laughing along with Lily.

"Hey, Cal? Can Lily join us? Her mother's spending Christmas in China." Ethan asked, slipping his jacket on as Lily retouched her makeup.

"Yeah, sure, why not?" Cal mumbled, taking his scrub shirt off. "We just have to stop by Tesco and pick up dinner."

"Okay, we'll be waiting in the car." Ethan smiled, patting his brother's back before leaving the room with Lily in tow.

Cal leaned his head against a cold locker and sighed, closing his eyes. He took a deep breath and finished redressing, grabbing his bag and shutting his locker door shut and locking it.

He quickly made his way out, saying "Merry Christmas, have a nice day." to his staying colleagues and entered the car, smiling at his brother.

...

"...I swear if I hear another Christmas song, I'll ruin your lovely pink walls." Lily joked, sipping on her second glass of wine as she watched Ethan halt in his actions to change the music.

"I don't know why you're stopping, Nibbles. I would have thought that you wanted those pink walls gone." Cal joked, sipping on his third bottle of beer.

Ethan smiled, pressing 'skip' on the music player. Lily groaned, but laughed. She stood up and smoothed her dress, placing her empty glass in the kitchen sink.

"I'm going to go. Maybe call my mum. Have some more Baileys and just sleep. Thank you for the dinner, Ethan and Caleb." she said, slurring her words slightly as she stumbled to get her jacket.

Ethan grabbed her gently, steadying her. "I'll call you a cab."

"I-I need the toilet first."

Cal had waited a full half an hour until Lily had gone home safely. He watched his brother pick up his first beer and sit down, turning the TV on.

"I was thinking that we could watch Elf. Lily and Robyn say that it's good and that they've watched it nearly every Christmas. Well Robyn has actually watched it every Christmas."

"And after that?" Cal asked, sitting beside him.

Ethan shrugged. "Whatever you want to do."

When the movie had finished, it was past 11 PM. It was now or never.

"Hey... Ethan?"

"Hmm?" Ethan mumbled, his eyes slowly opening.

"Sorry, were you asleep?"

"No, no. It's alright, just feeling a bit tired. I'm okay, we can watch another film."

Cal shook his head.

"No... There's something that I've been meaning to tell you. And it's really... serious."