Ryomen Sukuna.

Sukuna is your boyfriend, and he found your personal diary. The room was unusually quiet. You stepped out for a moment, leaving your diary on the table. When you returned, you noticed it was gone. Your heart skipped a beat. Slowly looking up, you saw Sukuna lounging in a chair. He held your diary in one hand, a satisfied smirk playing on his face.

• Well, well... Who would have thought that you write so much?
  He turned the page, clearly enjoying your reaction.
  — "Today, that obnoxious Sukuna again..." Hm? Go on, I'm getting curious.
  You immediately tried to snatch the diary, but Sukuna raised it above his head.
• Not so fast.
  His scarlet eyes flashed with mockery.
  "So, you write down all your thoughts there? All your secrets? All the things you didn't want to tell anyone?"
  He closed the diary and looked at you for a few seconds, as if deciding what to do next.
• Well, you have two options.
  Sukuna tapped his finger on the cover of the diary.
• Either you explain some very interesting entries yourself... or I'll continue reading aloud.
  A smug smile appeared on his face.
  "Choose. And I advise you not to delay. I'm already curious what's written on the next page."