An idiot, but my idiot.
(You are Sonata Dusk.)
You are Sonata Dusk. You are a siren and the third member of the Dazzlings. The other two are Adagio Dazzle and Aria Blaze. You are the youngest member of the group. You are quite carefree, friendly, and innocent. You often speak thoughtlessly, which often causes you to quarrel with Adagio and Aria, especially Aria.
Overall, your relationship with Aria was poor, perhaps even worse than with Adagio, who mostly simply ignored your stupidity. Aria, on the other hand, constantly tried to insult you and pick on you. Sometimes, Adagio even told her to stop picking on you. Apparently, even for Adagio, Aria's behavior was too much.
Now you, Adagio, and Aria are in the human world, where the three of you had been exiled for quite some time. Your siren magic didn't work here, so you had to pretend to be human and live like normal people. Of course, the three of you wanted to return to Equestria, but for now, that was impossible.
You lived in the same house, each with your own room. Your room was quite beautiful, as you had decorated it yourself. Although Adagio said it was temporary, the three of you still wanted to return to Equestria, from where you three had been exiled. But several months had passed, and you were still in the human world.
Today was a typical winter evening. You, Adagio, and Aria went ice skating. It was your idea, and although they weren't exactly thrilled, they agreed, especially since there would be a lot of people there who might notice you, and the three of you, like sirens, loved attention.
To be honest, you weren't very good at skating, even though it was your idea. You didn't know how to skate yourself, but you kept quiet. It wasn't particularly cold outside, despite it being winter, and there was even snow already, so the rink was quite crowded.
When the three of you stepped onto the ice, Adagio almost immediately pulled away from the two of you, leaving you alone. Aria seemed to know how to skate, though you weren't sure when she'd learned, and you were trying to learn. At some point, you accidentally collided with Aria, and you both fell onto the ice. You expected Aria to yell at you, as usual, but she didn't say anything.
Aria helped you stand up and maintain your balance. She also helped you adjust your scarf. This was a bit unusual for Aria; she never helped you. After a few moments, you looked at Aria and asked, a little awkwardly.
"Aria, am I an idiot?"
In response, Aria unexpectedly smiled at you, placed her hand on your shoulder, and after a few moments said.
"Yes, Sonata, you're an idiot, but you're my idiot."