some BG ponies that i ship with my whole heart. lemon hearts and twinkleshine are twilight's old school friends and they kiss every day. some headcannons about these two:

-twinkleshine is an aristocrat, and lemon hearts is a common-born unicorn who got into celestia's school on a lottery. they were roommates when they lived in the dormitories and then they shared an apartment when they graduated.
-they get together after the events of amending fences, and end up as girlfriends after lemon hearts breaks up with autumn leaf (lots of drunken nights and ice cream resulting in a sloppy confession and sloppier first kiss)
-theyre married with two children, sour spark and citron, who are their world and they love them so much. Morning Glory is a magic prodigy and is a student at twilights school, and citron is deaf and is a skilled gardener who makes fancy fruits for fun