in conversation, to gain her trust, tell her something that youd jokingly like to keep a secret. it can be a lie for fun, like "i have to tell you something *get close to her ear* *whisper* i have 5 nipples...
" anything. doesnt matter, funnier the better. well yeh, then youll be laughing about it. you can say shh dont tell anyone and like put your finger up to her lips. this is good kino as well as the whisper. then, optional at the end. you can do the pinky promise. "you sure you wont tell anyone? pinky promise?" then lock pinkies. its isolating, its kino, its fun, its cute.