Giving this episode a 8 out of 10. My standards are just different. I don't give out 9's and 10's that easily (I have, but extremely rarely) :P I would have to be pretty damn impressed to give something a 9, and to give something a 10......well, let's just leave it at that for now
Like many have already said, they did not just forget Makoto in this episode after the heart-wavering events of the previous episode, and I'm glad that this was handled well. I like how Yuuichi explained to Ayu when she was wondering where Makoto was. It is only, however, just the episode after, so I would still hope that they don't forget her for the entire rest of the series.
Those "endless loop" jokes, I gotta love those. First, there's the lunch scene with Yuuichi, Mai, and Sayuri, passing bento boxes to each other. That was just simply funny. But the part where Yuuichi and Nayuki got into another endless loop, that was gold, hehe. And Shiori eating ice cream in the middle of winter? Sheesh, no wonder she never gets better :P Oh, yeah, I almost forgot about the scene between Yuuichi and Kitagawa at the beginning of class at 3 minutes into the episode. There's some good funny moments in this episode, a little comic relief after the heart-wavering events of the last few episodes. But, of course, can't shake off that nagging feeling that there's a lot more heart-wavering stuff that can and will happen. Subtle hints such as Ayu not remembering that her parents were on vacation, Shiori not wanting to go home when Yuuichi was going to ask her to, Kaori being in a bit of a bad mood, among a few others. And then, of course, the scene with Mai and Yuuichi near the end that just leaves you hanging.
One of the parts I like the most would be when Ayu-chan and Nayu-chan finally officially meet face to face. Ayu had been eating breakfast at their place a few times already but Nayuki always sleeping late, missed her every single time. And I love that part when both of them agreed that Yuuichi was being rude, and then suddenly, asking who each other was. That was just cute
And the cutest part of all, Ayu and Nayuki sleeping
That was totally moe.
Looks like it's almost time for the ball. The lovely Mai in a dress, I can't wait to see that either
Moe to the max
Ayu "forgetting" about her parrents and the fact Yuuichi knows nothing of her is obviously hinting at something, but i will not dwell on this right now.
Fansubber
Guess Yuuichi never took into consideration the different sizes of his female friends. He couldn't have known, anyway, unless he bullied/teased them into telling him. 
