dude... if you like her tell her, girls like it when a guy will say, hey, i like you a lot and dont want to *miss out* on seeing you again. (if you say it that way they feel better about themselves because it makes them feel like they are a treasure... and thats what its all about anyway right)
(dont use the word date unless she does because spending together loses meaning when labled as a date... call it spending time together)
i agree with mesteno, youve already kissed her before right then shes already decided that your on the good list...
tell her you like her and wana date her