First kiss that others could see was here, when Leon won his Rising Badge, but her first actual kiss? ...Was also with Leon. >> Sometime after August 28th, 2011, when they started dating. It's a long story, but basically, feelings came about that he didn't wanna deal with, so he started avoiding her for two months, and when she found out she broke his nose and things were awkward as hell for another two months until Minnie's beach party when they finally sorted things out.

tl;dr: Lightning and Leon had issues with feelings, broke noses and tore hearts, then had nine months together. Was a good run.