Quite a difficult situation for such a young lad to handle smoothly. It's noteworthy, though, that he treated Sakura all cordially, with no intimacy whatsoever, whereas he hardly double-checks his words in Hina's company. I wouldn't say, though, that there would be no tension between Daichi and Hina, so if Hina had a cool enough head to think about it, she shouldn't be too discouraged. But just like Daichi, she's too immature to really realise it. Tsundere-like behavior doesn't really work in real life.