It’s about snails looking for love.
But I just have to intrude rudely and mention that handedness in snail shell coiling has been studied for a long time, and we mostly know the answer: the direction is specified by a maternal effect gene, so what matters is the genotype of Jeremy’s mother, not Jeremy’s phenotype. Jeremy and Lefty are almost certainly heterozygous, the product of a homozygous left-coiling mother and a mate who was almost certainly (because this is a rare trait) homozygous for the right-coiling allele, and because they carry the right-coiling allele, all of their little baby snails will be right-coiling. He’s going to have to look in their grandchildren to find more left-coiling snails.
Technical details of the genetics aside, it must be frustrating to have to take chirality into consideration when trying to mate. Imagine a world where being left-handed makes sex with right-handers require all kinds of twisty gymnastics to line the bits up just right.