I think the best couples I’m seen so far are this one:
Ichigo and Rukia, this has being one of the most beautiful pairing I'm seen in Anime, really, One of the reasons I follow the series, is to see this interesting pairing, A Human, and a Soul. And Im lloking foward that they end up together.
Orihime and Ishida, Their Interaction during the Soul Society arc, gave me the impression that something was born between this two
Hitsugaya and Rangiku…ohhh yeah I can se that happening, but I would not like to see Hitsu-sama going again for Hinamori, I really did not liked how she treated Hitsu, it was your normal girl Blinded by crush behavior, and Hitsu really was devastated by this,, I think his behavior towards Hinamori after the battle in SS ended (the scene in the Hospital with Unahana) it is what she deserves from Hitsu. I wouldn’t forgive her.