Also in chapter 21 after winning the bet, ML's original wish was for MC to visit him again in the bunker that's why he planned to tell her his wish just before she left. But she decides to stay with him the whole weekend before he could even tell her his wish. That's why he later changes his mind and says his original wish would be 'too easy to fulfill' because she unknowingly already promised him what he wanted, so he'll save his wish for something else. So when she left, he sat down and thought about her promise of spending the whole day with him tomorrow, making him smile at the thought of it.
I mean we all knew that was his wish, but I just didn't notice that it was more heavily inferred in that chapter.
I wish the cousin isn't one dimensional and feels bad for actually leaving mc. I won't expect her to feel heroic, maybe feel guilty.
I'm re-reading and just realized, the cousin shouldn't suspect that MC is sleeping with some guy if she came back with the condoms. Cuz it means she didn't use them, so she didn't sleep with anyone... that or maybe she thinks MC slept with a guy without using them lol.