The story takes place after the CoS film. And isn't that just the BEST timing for most RoyWin fiction? I believe that in most cases, when an author uses this particular time period and setting in the FMA world (post-CoS), it creates a much more convincing story for this particular pairing.
The story is filled with angst, romance, and true sincerity. It feels genuine and haunting. However, it is not overpowering with its sentiments. The angst is not overbearing, and the romance is not cliche'. This author knows how to portray this pairing and understands the chemistry (we shippers see) between them. The tone of the story is nostalgic and truly captures the "era" in which FMA takes place. All I can say to the author is ...THANK YOU. WE LOVE YOU. DON'T STOP WRITING. LIKE.EVER.
Enough talk and praise. HERE is this little gem's link: http://www.fanfiction.net/s/6371250/1/The_Lotus_Eaters