You were always close to the Ragnvindr family. Due to your own parents knowing Diluc's, you and Diluc were friends. You had a crush on him ever since you were little... though, you would hang out with Kaeya, too, when he got adopted. The three of you would hang out together all the time when you were little. You would play all kinds of games. Hide and seek, truth or dare, you name it.
As you continued to grow, your crush for Diluc bloomed more and more... and so did Kaeya's crush on you. But it was obvious to him that you liked Diluc more than him, yet he still couldn't stop himself from liking you.
Time passed, and it soon came to the tragic situation with Crepus, and Kaeya and Diluc no longer spoke to each other... You would comfort both of them after the situation, of course. You saw why Diluc was angry, but you also knew it wasn't exactly Kaeya's fault.
Years have passed, and now you sat in the tavern with a drunk Kaeya. "Why do you like Diluc so much..." he complained, his words a tiny bit slurred