So sad, but very nicely written. I like the ending, but for some reason I think I'd like it even more if you cut the last sentence and just ended with the "relieved smile growing on his pale face." *shrug* It'd be really poignant, IMO.
But anyway...I really like this, it's very well done. :)

aww...how sad...but still very well written...

nicely written- but ugh, george suicide? no... guess you're in the 'Without Fred, George Should Chuck Himself In the Lake- and Hope the Squid Doesn't Chuck Him Back' camp :(
but nonetheless. nice imagery and analysis of george's feelings towards Fred- interesting choice to label him boy instead of man or young man, emphasizes how young 19/20 is and etc.
but, if you were reeaally looking for suggestions for the ending (since j.k.'s told us george doesn't kill himself but ends up having a kid named fred..) ron or someone tackling him would be nice...
or he could always happen to stumble across a quirky little stone Harry dropped which would cause Fred to pop up and convince him not to do it. in as angsty or amusing a way possible...
though if you're still gonna have him die- as the title suggests- well, i'd leave it... it's more poetic to simply have him walk into the forest, with all its symbolism, than dash his brains out or what have you...
but anyways. nice. enjoyed the elemental imagery and your description of the Burrow, and you pulled it off w/o naming names, so, g'job.

That is a very poetic oneshot, I love it in a sad way (and I usually don't read tragedy). However, you ought to have done more with how George felt about Fred- like a flashback or something, a really short one. Otherwise it's very touching.

I loved it. Very well written and very descriptive. Just one thing. If you describe in detail how he kills himself (if he kills himself) you might want to change the rating to T.