chocolate seems so perfectly natural for Valentine's that it's become not so much an act, but a reflex. and there may be a very good reason for that as, according to The Economist:

"ON VALENTINE'S DAY the relationship between chocolate and sex becomes, at least for gentlemen considering the ideal gift, less a matter of theoretical musing and one of stark practicality. Will a box of chocolates do the trick? In some parts of Europe sex and chocolate go hand in hand, though a causal link is unclear. Mediterranean lovers tend to have as much sex but less chocolate—perhaps hotter weather has a bearing on both. The Japanese have precious little of either."

so yeah, chocolate is well the natural Valentine's special (or the means to it) in Switzerland and Austria eh. something that makes the Swiss a little less boring. and by the look of it, i kind of like China now. just this once.