notes – this is not necessarily my headcanon for the Darcy we have in the Lizzie Bennet Diaries, although I think that this Darcy could turn out in much the same way as the real one. I would say that the Darcy we see has never truly been in love, but neither has he been so resistant to the advances of women (although he has taken care to ensure that no-one is ever hurt by his actions).
secondly, this is AU in that the Lydia/George Wickham storyline does not exist here. I just want everyone to be happy and undamaged, okay.

i.
William has his first kiss at 14. Her name is Emily, and she's a suitably affluent girl with blonde curls tumbling down her back, and big doe eyes. They're similar in a lot of ways, or at least, similar in the ways that matter to William then; she plays the piano, speaks four languages, and her mother owns one of Pemberley's primary clients. He's captivated by her a little – he loves the way her lips effortlessly form French words, because no matter how he tries, he's always been clumsy with it; her presence always flusters him, just slightly.

When he decides the time is right, he makes a stumbling proposal in French, because it's the language of love, and he's fourteen, so he's sure that the cliché can be excused. He's so nervous that he can't bring himself to look at her, so he misses entirely how she rolls her eyes at his faltering accent, and the way she looks him up and down before acknowledging him with a simple "I suppose".

He leans in, tucks her hair behind her ear, and gently presses his lips to hers.

ii.
For a fourteen year old, he's tall, but he hasn't filled out into his frame yet; his sense of style looks altogether too awkward on a boy as gangly as he is. Emily claims she thinks him handsome, but apparently, he's nothing in her eyes compared to George; William learns that he's not in love with her from the way that George's betrayal stings a great deal more than hers.

He forgives – George is a brother to him in all but blood, and even as a teenager he is all too aware of professionalism and propriety to hold anything against the daughter of someone so important to the company. Still, he learns some valuable lessons that day.

iii.
His first kiss is at fourteen, and until early 2013, it is his last.

iv.
It isn't as though he's short of other things to focus on. William's always been serious, cautious, and school is no exception to that. He knows that his opportunity to run Pemberley is a long, long way off; he knows that his father wouldn't ask him to do it if it wasn't what he truly wanted for himself. He's mostly sure that it is, though, and he wants to be ready when he has the chance- wasting his time on girls who don't really care about him anyway is absolutely not going to get him there. At this age, he knows, they're foolish; he's sure he has the same capacity.

He'll have plenty of time for that later – at college, maybe, when he's laid a strong foundation for himself in his work.