"My name is Sunset Shimmer, and there are two Twilight Sparkles who are both madly in love with me.

Please help."

Twilight invites Sunset to spend a night at her house. Late night, Twi decides to read a story to her friend, but it seems that Sun isn’t paying attention to the story. Why was she looking like that at Twilight?

Cover art by my Sunlight senpai the great baekgup! Taken with permission!
Edited (again) by Exterminate Regenerate! Give him chocolate!
Rinnaul's review about it, check it out!

Twilight Sparkle accidentally leaves her class with the wrong backpack. Normally, this wouldn't be a problem, except that the backpack belongs to the one girl she's had the biggest crush on since moving to Canterlot High.

How do we fall in love? Is it just a collection of moments? Sunset is about to find out.

Shipping: Sunset/Sci-Twi

Spoilers for Friendship Games

Twilight asks Sunset to help her out with an experiment of hers.

This story is a sequel to Teenset Shimmer Is Dazed And Confused With Twilight On Her Arm

Twilight Sparkle was sitting around, not really doing anything in particular, when Sunset Shimmer called and vaguely expressed the want or perhaps need to get her to come over. Well in Sunset's company, just about everything turned into an adventure and ended up in a beautiful journey out into the early suburban night.
A journey with a clear goal. Wait, no, there are no goals... I mean. Well. It all turns a bit muddled.
--

More craziness. Social interactions without social interactions. Or, well, yeah.
More insane hit-or-miss girl-love.
Just as creepy, I know.

Twilight and Sunset, along with the rest of the girls in their group get paired up to take care of babies for an assignment. And not only do things get weird, things get very, very, interesting when Sunset starts to develop feelings for her partner.