Definitely,even though it´s a shonen so love affairs shouldn´t be the main events in the show,but it´s painfully obvious that they are kinda meant to be. But their relationship will get to that level probably only by the end of the whole Bleach,what would take a few years - fortunately. Even Kubo -creator- said that they have a unique bond between them and as seen many times,they are connected to each other,more than Renji an Rukia. They are ONLY friends,maybe Renji is a bit into her but it´s rather a brother-sister relationship from Rukia´s view. For Ichigo,Rukia is a ray of light in his dark life,so no wonder...IchiRuki 4ever! ^_^