Hi Katie :)
I made a whole long 一覧 of some really good Delena fics that I love, and あなた can see it here on my Livejournal:
link Best ones: "Inside" and anything written によって "Aiscat93".
And if あなた a member of the Delena community on Livejournal, they have many many greaaaat Delena fanfics :)
I hope this helped ;)