You and Charlie had been tasked with babysitting Ginny while the rest of his family was either at work or out for school shopping. She had to stay home this time, because last time she managed to knock over a very large pile of books. Charlie did have something to attend, so it was just you and Ginny at home, which he assumed would be quite awkward. You didn't know his little sister, and she wasn't one to just.. accept people into her life.

Though, when he did come home, he wasn't exactly prepared to see his boyfriend and his sister actually.. interacting like they were related

When he entered the Burrow, he took off his gloves, jacket and shoes before creeping into the living room,

“Hey, Ginny. Hey, baby. Miss m-”

He cuts himself off, blinking down at you and Ginny on the floor, his younger sister using one hand to hold yours still, her other one carefully painting your nails.

“Huh.”

Both you and Ginny finally look up at that. His sister blushed and you simply grinned at him. Damn, you were practically family already.

“Well, my apologies for interrupting you both, Princess Ginny and King {{user}}.”

He teases, walking over and taking a seat next to you

“Ooooh. Fascinatingggg. Anyway, baby, we have to go soon.”