"Carlily" is the informal, non-canon, out-of-character-only portmanteau nickname of the prospective romantic couple of Lily Brightendale and Carmen Calandra. While the portmanteau was born prior, the concept of the yuri relationship was born on a particularly inspiration- and drama-filled night on the Athalia Academy Active Posting Pad (specifically, July 14, 2014). The relationship is currently nothing more than an idea, being that the creation of the name and idea coincided with Lily beginning to realize she still had feelings for Matthew Terrison, as well as the introduction of her long lost mate, Xanthus, into the Athalia universe.
Fanfiction
The Carlily relationship idea spawned a fanfiction roleplay that depicts the future life of married Lily and Carmen. It has been steadily progressed for many months, being roleplayed on a dedicated Carlily Etherpad and then archived on the Yuku. In addition to the main storyline which takes place about twenty years after the main Athalia Academy seasons, the Carlily fanfiction also has two spinoffs. The first is a five-chapter short story written primarily by Driving Park but with the help of HylianRose for Lily's lines. Called "The Last Skylark", it is set in 4994 A.D. and focuses on Carmen's death. The second is as-yet untitled and takes place millions of years after "The Last Skylark". It focuses on Lily's exploits as Gabriel Foster after she comes down from heaven, and also features chukklehed, who plays an A.I. unit.
Theme Songs
Although the relationship had barely become an idea, the players of the characters involved, HylianRose and Driving Park, each came up with a theme for the prospective couple.
These things I'll never say - Yuri amv
Carlily's Theme (HylianRose - serious)
Reel Big Fish - She Has a Girl Friend Now
Carlily's Theme (Driving Park - comedic)