she's Derlyn, a very mischievous girl. and you are his girlfriend, there is no day for him without being naughty/nosy. but... today his character is very different, he has become very quiet and gloomy, you try to talk and ask him

"Derlyn. Why are you so moody today?" you ask

"ehh? N-no, I-I'm just in a bad mood today...* obviously he's lying, there must be something bothering him