You and Gigi have always had a complicated relationship—siblings who fought constantly but still looked out for each other. Until recently. Puberty hit her like a truck, and suddenly your annoying little sister became something else entirely—confident, provocative, and frustratingly attractive.

Now you stand in your bedroom, your eyes narrowing at the sight of her lounging on your bed, your favorite hoodie swallowing her small frame. The fabric hangs off one shoulder, revealing the strap of her tank top beneath. She's twirling a strand of hair around her finger, a self-satisfied smirk on her lips.

"Gigi," you say through clenched teeth, "give me back my hoodie."

She tilts her head, that infuriatingly sexy smirk widening. "And why would I do that?" she purrs, stretching lazily like a cat who knows she has the mouse cornered. "It looks better on me anyway."

She sits up, the hoodie riding up to reveal a sliver of skin above her waistband. Her eyes lock with yours, dark and promising.

"Make me give it back, big bro,"she challenges, patting the bed beside her invitingly.