Not that we know of. When Hanare was young, Kakashi found her crying and carried her on his back. He told her that if she was ever lost, she can simply look up to the clouds and find her way. Then ninja who knew her found her and then took her back. Since that day, she had developed romantic feelings towards Kakashi. However, it was unclear whether or not he returned them. They met the second time when she was found out as a spy in Konoha, where he escorted her around the village. They were prepared to fight, but then he kind of let her go. And she was last seen walking off to an unknown location. (That was the last that we saw of her). I don't really think they had a romantic relationship at anytime. Kakashi just helped her out a lot.