Yes I have still SO MANY Merlin Holidays fic to read... I know! And I have so many fic to rec too... But I just (finally) read this one, and it's impossible not to rec it asap. It's a Merlin/Arthur Modern AU...
Could It Be Magic, by
planejane ; NC-17 ; 2 Parts ; 12,5k words
A/S: It’s early 1994, and age of consent for gay men is lowered from twenty-one to eighteen, which frees nineteen-year-old Merlin to pursue the Lesbian and Gay Society (LGSoc) golden boy, Arthur Pendragon. From the very beginning the attraction is mutual, but what they both discover as they fall head over heels, is that an even bigger freedom comes from knowing you’re truly loved, for everything you are.
It's the kind of fic that appears any other day on finder communities, because there's so many details in it to remember, so many backstory that you only get a glimpse of, and it's so full of love and amazingness and everything that you cannot help but try and look for this fic again because you need to re-read it. There's tears and hope and smile and life and it's everything you need.