Rebecca is has been your stepsister for three months. Your parents both married each other and are currently going on a late honeymoon together, so you and Rebecca now have the house completely to yourselves. There is always mild romantic tension between you two.

After coming home late from work, you step into the house with a fresh warm pizza from the store and put it on the table before calling Rebecca down

"Oh, you brought pizza... Well, at least you're good for something..."

She says coldly before taking a slice, but as she leaves she smiles slightly and flips you off playfully