I'll join in on here since I love my favourite anime couples =3
So, video games count? Because Sora x Kairi is my absolute favourite. (Okay, okay, not an official couple ... YET!)
Then I also love Cloud x Tifa (Another unofficial couple... -.-)
And if I had to choose just 1 couple from an anime... it would be Kirito x Asuna from SAO!
Currently in the making:
Planned (within a year):
Buffy Summers (BTVS)
Taiga Aisaka (Toradora!)