welll anyways.. for me its..

Inuyasha and Kagome from Inuyasha
Syaoran and Sakura from Tsubasa Chronicle
Yuki and Kaname from Vampire Knight (sorry, manga)
Kira Yamato and Lacus Clyne from Gundam Seed
Takuto and Mitsuk from Full Moon wo Sagashite
Karin and Kazune from Kamichama Karin
Tamaki Suoh and Haruhi Fujioka from Ouran High School Host Club
I don't watch much anime.