Which scenario sounds better?

The second scenario sounds better, more romantic in the sense that they're young and in love and playful. Teenagers in love would never be so serious about their first kiss. It would just kinda "slip out" in a situation like that. But it would be even MORE romantic if you made them kiss accidentally after he dunks her head under the water and have him confess his love for her [if it's love]. OR you could combine them both were they're in the water, playing, and they just kinda freeze and gaze into each others eyes before kissing. Then they can resume their playing in the water, but with a sort of awkwardness that later forces them to confess their true feelings for each other. UGH! THAT WOULD BE SOO BEAUTIFUL! *tears in eyes* Sorry for going fangirl on you, but I love romance books, and I love cheesy lines. They make me "squee" in glee. You're book sounds AWESOME; I would love to one day see it in stores so I could buy it. Lol.