(Warning for language? But it's a well-known Christmas song so I don't think it matters)

"You scumbag, you maggot,
You cheap lousy faggot,
Happy Christmas your arse,
I pray God it's our last!" You sang along gleefully to the upbeat tune, earning an exasperated sigh from the blond across the room. You turned around to shoot him a glare. "Where's your Christmas spirit Mattie?"
"Hm?"
"You just sighed."
"D-Did I?" You peered around the Christmas tree at him.
"Yes, yes you did. And that's possibly the most attitude I have ever received from you."
"Attitude?"
"Attitude. Sass. Talky-backy-ness." He laughed and you couldn't help but join in. "Alright, so that wasn't the best terminology, but you get the idea. So spill it."
"It's just that, of all the Christmas songs, you decide to sing this one ridiculously loudly."
"I like this one. What's wrong with it?"
"You wouldn't prefer a verse of Jingle bells? Or something a little more…" He paused to hang a sparkly silver bauble on one of the higher branches. "…polite?"
"You are becoming more and more like Arthur."
"Says the one who's just like Alfred."
"I take it back." You swung around the tree and poked him in the chest sharply "That right there, is the sassiest thing you have ever said. No, that was a downright insult!"
"Eh? Ah no, I didn't mean-"
"I am now offended and shall act accordingly."
"Wait, __________!" You waltzed over to the stereo, head held high in a blatant show of discontentment. Ignoring Matthew's constant attempts to explain himself, you turned up the volume until every pine needle on the tree was quivering; he had an abandoned look on his face as you went back to hanging tinsel around the spacious lounge.
You could feel those beautiful blue eyes boring into your back as you continued to drape the decoration over the doorway and the guilt was sucking you in like a bog. You knew how much you meant to him, since you were one of the few people who actually acknowledged his existence as completely separate to Alfred's. Abruptly you span around, forgetting the fact that you were standing on a stool in order to hang the glittering garnish. You let out a squeak of surprise closing your eyes instinctively, but not before glimpsing Matthew darting across the room towards you.
"That was terrifying."
"No kidding." The proximity of his voice registered at about the same time you realised that the fall had left you uninjured.
"Oh shit! Mattie, are you okay?" You shifted yourself slightly to look at him, your hands resting on his toned chest; silently you wondered if he had been working out.
"Fine," he groaned, attempting to push himself up off the ground with one arm while the other remained securely wrapped around your waist. "You?"
"Uninjured; thanks to you. Is playing hero a family thing?" he looked at you almost sarcastically before blushing and turning his head to the side.
"Not funny."
"Sorry." You rolled off him and helped him sit up. Your eyes narrowed; he flinched when you'd grabbed his arm to pull him up. "Back-chat and lies, what is wrong with you today?" Before he could protest, you changed your tone to an authoritative one. "Show me your arm." His shoulders sagged and the Canadian held out his left arm gingerly. An angry purple bruise was already forming above his elbow. "Oh yeah, that looks just fine to me. Can you move it tough guy?"
"Like I said it's fine." He wiggled his fingers and stretched a little to prove his point. "Nothing's broken."
"This time." You let out a relieved sigh. "Decidedly, I hate it when you're reckless."
"I wouldn't need to be reckless if you were a little more careful." He gave you an odd look before awkwardly pulling you into his arms and resting his chin on top of your head.
"Mattie?"
"That was almost the worst Christmas of my life."
"Mattie."
"And when I said you were like Alfred, I didn't mean the obnoxious bit, or the-"
"Mattie, it's snowing." He turned to look out the window at the delicate white flakes that were twirling across the night sky. "I can't remember the last time I had a white Christmas."
"Beautiful isn't it." You murmured in agreement and cuddled into his chest.
"You can finish what you were saying now."
"Eh? Ah, no it's fine. It wasn't really that important anyway."
"But I really want to know now." You whined at him with big dewy eyes: a sure-fire way to get what you wanted.
"Ah, but it's kind of…"
"Kind of what?" His whispered reply was too quiet for you to hear, even with your lack of distance. "I can't hear you."
"Embarrassing." You honestly couldn't get enough of that blush, it was way too cute. How people could mistake him for Alfred would always be a mystery to you; the image of Alfred blushing was too… Weird. It just wouldn't happen.
"Tell me~" You giggled happily.
"You're bright."
"Well that made absolutely no sense."
"I can't explain it well! It's kind of like you both hold this glowing quality that attracts people, Alfred's really irritating and there's a lot of people who'd like to punch him me included but for some reason he's still super popular, and it's because he's bright."
The expression in his eyes was wistful and would have made you want to hug him if you weren't already.
"You're the same __________. You're so bright that you attract others to you without even trying; people like me who don't even have their own identity can only watch from the shadows."
"Not true." You vehemently forced the image of Matthew alone in a dark corner out of your mind. "Don't say things like that, it's like you think that Alfred's better than you."
"…" His lack of denial was heartwrenching.
"Listen to me, if I thought that idiot was any better than you why would I still be here when everyone else is at his Christmas Eve party?" This time his lack of answer was good. "Exactly, I wouldn't. You know that there's no one else I'd rather spend Christmas with right?"
"There isn't?"
"My god how didn't you know that! Matthew Williams you idiot!"
"S-Sorry?"
"Don't apologise."
"Sor-"
"No. No apologising. You are amazing and adorable and I love you."
After a moment, time caught up with you.
"You lo-"
"Please forget I ever said anything."
"So can I take that as a love-love me or-"
"Please forget the past thirty seconds." You whined burying your flushed face in his chest; your own words were ringing in your ears and the disbelief had just registered. Even when you were young you'd decided that a confession was something that you'd say casually at the perfect moment, you'd make it seem perfectly natural and there'd be no way it'd make you look like an idiot. That moment right there, held none of those things.
"What if I don't want to forget?" You looked up at him to see an equally furious blush spreading across his cheeks.
"Please don't make this anymore awkward than it already is."
"Um… Is it fine if I just… Well I'm not exactly sure how I'm supposed to do this but…"
"You know what, just say it. At this point I don't think things could get any more embarrassing so whatever it is just go for it." So he did. Your eyes widened slightly at the tingling sensation of his lips against yours as his arms pulled you ever so slightly closer. After a moment the kiss was over, leaving you in complete shock. His forehead rested against yours tenderly with only one word of explanation for the brash action.
"Mistletoe…"
"That was kind of, um…"
"Weird. I know, sorry but you said to go for it and since you sort of confessed I thought you wouldn't mind."
"Actually I was going to say 'wow' but we can go with your answer if you want." You giggled at his expression, it was akin to how you'd expect a puppy to look if you flicked it in on the muzzle; the laughter was only intensified by relief that you hadn't been rejected. Kissing the tip of his nose lightly you jumped to your feet and grinned as the midnight bells chimed in the distance. "Merry Christmas Mattie."