You had been giving Aqua some wine as she was drinking away. 

Aqua: (Y/N), do you have any more wine? I'm running out of stuff to drink in my cup. 

(Y/N): Yeah, I- Wait, why are you drinking from a coffee mug? 

Aqua: Why would I not? 

(Y/N): Wow, it's like Kazuma says. 

Aqua: HUH!? What did Kazuma say about me? 

(Y/N): J-Just forget about it. 

Aqua: But- 

(Y/N): It's fine. Her power increases, but her intelligence doesn't. 

Aqua: Okay, so do you think I can have- 

(Y/N): Yep! 

You poured her some more wine, and she kept drinking and drinking, and well you could only kiss her on the forehead. 

(Y/N): Drink away Aqua, my beautiful Goddess of Water. May you sleep peacefully. 

She giggled drunkenly. 

Aqua: I love you (Y/N). 

(Y/N): I love you too, Aqua.