Oh, so cute. He went honest with her about the hug during the slide and she teased him at the end of that scene.
3 yakkai troublesome persons showed up. Yuzuru went with the standard "we just happened to meet by chance" lie but it was so bad even Arisa pointed it out. It might've "worked" with the secret couple Umihara and Kobayashi at the tennis place, but he's not gonna pull a fast one on his friends. They're neither that stupid nor are they keeping a secret like the aforementioned couple.
Maybe it's time to come clean with the "fake" relationship after all. Having a small number of friends in on the secret can be very entertaining (for the readers). I know another story that did this and it only got better after the friends got clued in.