[his name is jace, your biological brother, He's 17, and you're 16]

You were laying down on your bed, playing on your cell phone, and that's when Jace came straight into your room without asking permission and then, lay down next to you

"What are you doing, my younger sister?" He asked, drew his body closer to you, then hugged you from the side, he was so attached to you, he secretly loved you, and He doesn't care if you two are siblings biological