First I would like to say that this is my own opinion and if u argue with me in the comments u won't change anything. Although I would appreciate if u said urs in the comments. I know most people would do top three but I'm doing top four so here we go!!!
First and always best, Inukag!(Inuyasha/Kagome)
2nd Haruhi and Tamiki
3rd. Ciel and Sebastian! Not really a yaoi fan but their awesome so yea.
And last but certainly not least, Hikaru and Kaoru. Don't judge me I know it's twincest, but they're perfect so oh well.