Hark, I have pairings that I like. (for all of you who do not like homosexual pairings, don't bother reading much past this.. because yes, I have a few homosexual pairings that I like and I'm going to expound upon them RIGHT now.)
Tieria/Lockon. Yes, you did see it coming.. and the end fueled it for me.. and while I won't say that it is canon per se, but it certainly has ENOUGH subtext to substantiate it in my mind and make it uber sweet.
Hallelujah/Allelujah. Crackship ahoy! But hey I found japanese fanart of it. There was a long discussion I had with a bourgeoning Hallelujah muse involving how masturbation was technically incest because you couldn't get any more related to you then yourself and that is probably why Onan got struck down by God in the Bible, because he was sleeping with himself.
Graham/Billy - "That's why I fell for him..".. exact words in, what was it the second or third episode. Yes it was a joke, but you know what.. so what. I think it's cute in it's own convoluted way.
Louise/Saji - Oh gods the angst.. OH I HOPE THEY HOOK UP IN THE NEXT SEASON OH IF THERE ARE GODS IN THE WORLD THEY WILL DO SO.
Setsuna/Exia - Because let's face it.. he's fixated with his gundam.
Felt/Kris: - Very little canon basis, however Kris is always trying to have Felt go off and do other things like shopping. (And I bet Felt secretly enjoys it)
Mei/Hong - The idol princess and her ninja warrior.. that is true love right there.
I hated most of the thrones with the exception of Johan. Mihael and Neena were absolutely vile.. Johan was probably just as bad but he wasn't OBNOXIOUS. I can do destructive if they are not obnoxious, seriously when Neena opened fire on that wedding party just because they were having fun while she couldn't.. well damn it, I just wanted to kill her and then stake her so that she didn't decide to just randomly come back to life due to her evil vampiric uber-bitch powers.
Honestly Neena made Tieria seem like a fucking good samaritan.