say something silly like this, it usually works...I used it all the time when i was in highschoolll
Find something to make a bet on.. Like " I bet you i can shoot this paper in the trash can from this far"
She'll Say " leme see"
you say " if i make it, you kiss me, if i miss, I kiss you"
now if shes interested she'll something like " no fair, you win both ways
" then say " fine.. what do you want if i miss"
blah blah blah , shoot the paper, hit or miss go in for the kiss and she will comply..
This move has never ever ever failed for me... not even once. I still use it sometimes, however i rarley need it anymore. I'll do it with a random stranger at a bar or something. They do have to be interested in your first though