This time it's a variation of the Storm botnet of unhappy memory, and a particularly ugly variation it is.
2009's Valentine Storm is known as Waledac, and it's generating thousands of variants of its malware as it spreads.
And it's generating them fast: as many as a thousand Waleac variants a day are being produced.
The malware hooks are about what you'd expect: "love" links, e-card Valentine's greeting grabbers, romance ruses.
Re-purposed and in some ways reinvented, Storm is back with what may turn out to be a vengeance.
Whether or not Cupid has an arrow aimed at you, you can bet that Waledac and other Valentine's attacks are going to try to worm their way into you computer if not your heart.