Zero x Yuuki for me
not that i don't like Kaname i just like Yuuki with Zero more.
Spoiler:
I always thought it'd be Yuuki and Zero.
cause Kaname always seemed more like an older brother to Yuuki to me
....
but taking into account recent events in the manga i'm not sure anymore.
but yeah I still hope for Yuuki x Zero!!
I also like Shiki x Rima and Kain x Ruka