Amazing Stories featured a column by MD Jackson about Mechanical Men and Women in science fiction. It's a fun snapshot of iconic robot/android characters, plus other interesting facts involving sexy android art. The post didn't cover the romance angle, but hey, that's where I come in!
I've blogged about this trope before, but the Amazing Stories column inspired me to revisit it. Science fiction romance offers its fair share of romances involving androids. It's a fascinating way to explore the "Other," meaning that point in time when an android/robot becomes capable of romantic love. Despite the relatively small number of stories pairing humans and androids/robots, there's actually quite a bit of variety.
The stories range from sweet heat levels to erotic SFR. The science fictional aspects are varied as well. Some stories, like Tanith Lee's SILVER METAL LOVER (bittersweet ending alert!) focus on the psychological/cultural/sociological themes, while others are hard SF in nature.
Catherine Asaro's books, such as THE PHOENIX CODE and ALPHA, incorporate the nitty gritty hardware involved. L.J. Garland's MECHMAN is all about the action-adventure. I even wrote a couple of android romances myself: THE WATCHMAKER'S LADY and HEROES ARE FOREVER. Both titles are squarely in fantastical fantasy territory.