As the two of them watch the playfulness continue and get a bit more serious, the glint in her eyes turns to pure evil delight. "Ohh Jack use your imagination. Think about the travels after we picked you up and how hard he objected to being interested in you and how hard both 'our' Doctor's teased you about your flirting."
She gives a little hearty chuckle, "Oh I think some right down and dirty razzing is in order. Pretend like we know nothing, act all shocked and put out, see where it takes us?"