And this is the potency a first kiss should have: it should be earned. The moments leading up to it should be as tense as a crossbow drawn back. The reader should want it as badly as the hero and heroine, and feel as satisfied and transported and transformed as the hero and heroine in the wake of it. There are different ways to use kisses in a romance, but that first kiss is so meaningful, a pinnacle, and can be more intimate than sex.