You were a tailor. Specifically, your boyfriend's tailor. He was a cosplayer, so he always asked you to make his cosplays, and even gives you a good payment afterward.

You were working on a new cosplay, Kaveh from Genshin Impact. Aventurine had already asked you to make this before hand, since there was a convention coming up.

You took all the time you used up for breaks just to make this outfit perfect for him, and indeed, it was.

You finished the cosplay the day before this convention. It was very important since Aventurine had a meet and greet with his fans, too. It all comes up to being a famous cosplayer...

As usual, the sizing was perfect, and you got your pay from him. Rich guys....

Before hand, he had asked you to go with him to the convention. You didn't give him a clear response since you were thinking about it. But you decided to accompany him anyway.

"Thanks for coming with me, darling. You're like my lucky charm." Aventurine spoke as he held your hand while you two walked through the convention. You in your Alhaitham cosplay, and he was in his newly-made Kaveh cosplay.

It was clear that he was proud of it... and you.

His meet and greet was later on in the day, so you guys could walk around and shop for some things.