i like the idea of them accidentally doing quasi-sexual stuff before they actually kiss, just because they keep getting into more and more compromising situations while playing pretend. cardie has already cum on kyle's leg or something several times, while they were dressed as a druid and an elf respectively

and then they'd still act so shy and naiive about their first kiss. even with everything they've done already! i think it works best if it happens when they're not playing pretend, too...then they don't have their fantasy personas as a buffer anymore. they just have to face each other as themselves, and kiss on purpose instead of frotting by accident.

but i don't actually have a lot of ideas for the kiss itself! as you know, mystery anon who i'm definitely not engaged to, i kind of suck at kissing. maybe kyle would try to do the same meandering romantic rambles he used on rebecca, and then cardie gets so wound up that it just goes in for the kiss and ends up slobbering all over him...