A little while ago--most likely since 2013 started, but for all my memory is worth, I could have read it in late 2012--I read a Transformers Prime fan fiction that was pre-war set, featuring a love triangle between Orion Pax, Arcee, and Airachnid--then known as
Ariel. Ariel joined the Decepticons and became Airachnid after accidentally stumbling across Orion and Arcee kissing. I can't remember anything about it other than that aspect, I can't remember what it was called, who wrote it, whether it was on DeviantArt or on FanFiction, or even if it was good or not, I just remember that snippet of it.
Anyway, I'd be interested in reading it again, but I can't find it. I've searched all day using all the tags I could think of on both sites (and even checked Archive Of Our Own for good measure), but no luck. So if anyone has it within their spark to point a fangirl in the right direction, I'd appreciate it.