I'm trying to track down a short story I read about 5 years ago. It was in a secondhand paperback anthology, which I guess could have been printed any time in the last twenty years.
An alien race had made contact with Earth, and had established a small embassy on Earth on a (possibly Pacific?) island. Single Earth women in particular were targeted in advertising to take cheap holidays there, and so have a luxury stay in a tropical paradise. The story follows one such woman, who in a vulnerable state after ending a relationship, is tempted to take this trip. She falls in love with her alien host, they have sex, and the next day he dies and turns into candy. She is at first horrified, but finds the candy so tempting she cannot resist consuming him. Clearly this process was inspired by reproduction in some insect species, where the male sacrifices himself in order to mate with a female. It turns out that the whole point of the so-called embassy is a means to allow the aliens to reproduce. Possibly the aliens had run short of females of their own, but my memory is hazy on this.
I thought at first this would be from Silverberg, but trawling though his short stories hasn't turned anything up.