Must-read fics

Hey guys, I'm new to the fandom and still making my way through the series (I'm currently watching series 4)

I just wanted to know if any of you had any recommandations for good starter fics, preferably Morgan/Reid.
I'm a sucker for very long, non-AU fics with lots of UST that eventually gets resolved :) I also love stories that explain how they get together rather than established relationship. If possible, I'd like to avoid spoilers since I haven't caught up on the most recent episodes yet !

But anyway, just tell me which fics are a must-read for newbies like me ! :D

Thanks in advance !