Meiko's Secret: "I want you to share your feelings"

Miki is still thinking about the kiss between, Arimi and Yuu. She calls Meiko's house but she's not there. Ginta tells Miki that he is willing to wait until she is ready to choose him. They start to carry on with the way things were. Then Shinichi is called to the office and, they've learned about Meiko's sleepover with Shinichi. What really happened? What happens to Meiko and Shinichi?