Salut! I think it might've been taken down, but does anyone remember a twilight x celestia x luna fic, where the royal sisters ended up dating Twilight without each other knowing until the denouement? It was written well before Twilight became an alicorn, but I can't seem to find it anymore.

Is this the one?

5787225

No unfortunately. From what I remember, it was a fairly long fanfic, and I think it was even before the introduction of Cadance and the Royal Canterlot Wedding.

Stuck in the middle by bigwig6666

Or

Under the heavens above by Voltage Drop

5787522

I think it may have been Stuck in the Middle,- did that have more than one ending perchance?

I also can't seem to find it unfortunately.

5789501
Author deleted several stories, that was one of them. Former URL:

http://www.fimfiction.net/story/43257/Stuck-In-The-Middle

Try the wayback machine from 2012/2013:

http://web.archive.org/web/20130115042229/http://www.fimfiction.net/story/43257/stuck-in-the-middle

Hover over the "download" button and choose ePub, and it'll let you download the complete story. Otherwise you'll have to hunt for individual chapters. Wayback does have them, but they're buried well.

Here's the summary from my "fics I've read" file:

Stuck In The Middle by Bigwig6666
Complete
CLOP. Twilight is dating both, secretly; cheating. They find out when they both offer her a Prance vacation, demand answers. Many tears. Three endings: Luna, Celestia, and the 'canon' ending, Both (with marriage). Alternate Luna Only / Celestia Only endings are dark.