this will never be complete. le sigh.
NOTE: threesomes or foursomes mean i like all four together, and any of them paired up. ie: Zoro/Luffy/Sanji automatically means i like Zoro/Sanji, Sanji/Luffy, and Zoro/Luffy as individual pairings.
ANIME/MANGA
Bleach
Ichigo/Ishida
Byakuya/Renji
Ichigo/Hitsugaya
Ichigo/Urahara
Ichigo/Orihime
Renji/Rukia
Ichigo/Rukia
Gin/Matsumoto
Yoruichi/Soifon
CLAMP
Doumeki/Watanuki
Sakura/Syaoran
Fai/Kurogane
Code Geass
Lelouch/Suzaku
Suzaku/Kallen
Gino/Suzaku
Lelouch/CC
Lelouch/Rolo
Durarara!!
Kida/Anri/Mikado
Kida/Mikado
Shizuo/Celty
Shizuo/Izaya
Izaya/Namie
Shinra/Celty
Fairy Tail
Gray/Juvia
Natsu/Lisana
Lucy/Loki
Natsu/Erza
Erza/Jeral
Gazille/Levy
Natsu/Gray
Lucy/Cana
Inazuma Eleven
Endou/Kidou/Gouenji
Fubuki/Gouenji
Handa/Max
Touko/Tsunami
Endou/Kazemaru
Endou/Hiroto
Hiroto/Midorikawa
Burn/Gazelle
Katekyo Hitman Reborn!
Yamamoto/Tsuna/Gokudera/Haru
Yamamoto/Hibari
Gokudera/Chrome
Mukuro/Tsuna
Hibari/Dino
Xanxus/Tsuna
Naruto
Naruto/Gaara
Sasuke/Naruto
Naruto/Sakura
Sakura/Sai
Minato/Kushina
Hinata/Kiba
Kakashi/Iruka
Shikamaru/Neji
*this is also my favorite 'crack' pairing fandom
One Piece
Zoro/Luffy/Sanji
Robin/Zoro
Smoker/Tashigi
Nami/Usopp
Doflamingo/Crocodile
Ookiku Furikabutte
Abe/Mihashi
Tajima/Mihashi/Izumi
Abe/Mizutani/Hanai
Sakaeguchi/Suyama
Haruna/Mihashi
Junta/Kazuki
Shinooka/Abe
TV SHOWS
Glee
Kurt/Finn/Puck
Quinn/Rachel
Mike/Tina
Quinn/Sam
Puck/Rachel
Will/Emma
Criminal Minds
Morgan/Reid/Hotch
Morgan/Garcia
Prentiss/Hotch
KPOP
Big Bang
TOP/GDragon
Seungri/GDragon
Girls Generation (SNSD)
Yuri/Sooyoung
Hyoyeon/Jessica
Jessica/Tiffany
Taeyon/Sunny
Hyoyeon/Seohyun
Yoona/Yuri
Kara
Gyuri/Seungyeon
Hara/Jiyong
Nicole/Gyuri
One Day (2PM and 2AM)
Taecyeon/Jaebum
Wooyoung/Junho
Changsung/Nickhun
Jokwon/Jaebum
Seulong/Jinwoon
Taecyeon/Seulong
SHINee
Jonghyun/Minho/Onew
Jonghyun/Key
Onew/Taemin
Super Junior
Siwon/Hankyung/Heechul
Donghae/Eunhyuk
Kyuhyun/Ryeowook
Kyuhyun/Eunhyuk
Kangin/Sungmin
GAMES
Final Fantasy
Cloud/Aerith
Leon/Cloud
Zack/Cloud
Yuffie/Leon
Kingdom Hearts
Roxas/Sora
Riku/Namine
Axel/Roxas
Sora/Namine
Demyx/Zexion
Pokemon
(manga)
Red/Yellow/Green
Blue/Yellow
Ruby/Sapphire
Silver/Blue
Gold/Silver
Dia/Pearl
(game)
Red/Green/Leaf
Ethan/Lyra aka Hibiki/Kotone
Hikari/Jun aka Dawn/Barry
Haruka/Yuki aka May/Brendan
(anime)
Satoshi/Shigeru aka Ash/Gary
Satoshi/Haruka aka Ash/May
Haruka/Shuu aka May/Drew
Hikari/Shinji aka Dawn/Paul
OTHER
Harry Potter
Harry/Luna
Harry/Hermione/Ron
Sirius/Remus
Ron/Draco
Percy/Oliver