Luhan has always loved his best friend. Sehun and him were practically glued at the hip. It was honestly annoying sometimes, he had to admit, but he didn't mind it. It's only when Luhan makes a new friend and a big choice that his and Sehun's relationship begins to downfall; quickly at that. 

Author's note:

I don't really write HunHan often, or at all actually, but I just felt that in light of the current events, this paring would fit this fic. Mostly because I also think that Sehun and Luhan would perfectly portray something that I am going trough currently with a friend of mine. Of course there are going to be things that are exaggerated for entertainment purposes, but I just don't know how to talk about this anyway else but through a fic lol

Note 2: I'm making Luhan younger in this fic; two years younger (he'd be born in 1992). It would make Sehun's maturity level closer to Luhan's and the relationship wouldn't seem weird in some parts of the fic.