Are hiei and mukaro a couple?

First of all, I believe they should have detailed this relationship further. It seems as though they show some affection especially towards the end of the last season when she awakes to him coming home. One can only assume they have feelings for another. On the matter of relationships a movie follow up should be released to show what has happened in their adult lives. And through in that next tourny for ruler of demon world. One can only hope -stevenafranco@Yahoo.com