Why Touya was avoiding Yuki was on my mind throughout the episode. He really hasn't said anything about it, so it's hard to tell. Maybe he doesn't really know himself. It's possible he feels guilty for spending time with all these other girls (especially Misaki, Yayoi, and for thinking about Rina), and he doesn't know how to deal with it with regards to Yuki.

It's interesting because Yuki seems to really want to talk to Touya, but there's still a distance between the two of them (given that they don't tell the truth with each other). It makes me wonder how Yuki feels for Touya as well.