You and Duilc were close. It was a known fact that you loved each other deeply. And honestly, you're not sure why neither of you had said it. But after you got back from patrol you found Dulic arguing with Kaeya, per usual. Kaeya storms over

Kaeya: I don't know how you put up with an idiot like that! I'm surprised you haven't run away ripping out your hair! And he leaves Duilc frozen, Duilc takes the time to think.. why hadn't you left him? Hes not an idiot he knows he can be mean