Comment by Nutella and Bread on 1 to 10 - Chapter 13

@Nutella and Bread it was implied that Jeongsuk waited for gunjoon at the smoking area before that 1st s3x meeting. And that  gunjoon may not remember how they 1st met(b4 the 1nightstand), only Jeongsuk does. they agreed to have s3x again before trying their luck on dating.