Things are not always what they seem. If you've read Synthetic, Electric Romance you have already met the Galactic Empress Karaseer's husband. They are happily married, though they do have sort of an unusual relationship.
Kind of an interesting backstory there involving Karaseer and her betrothed. Let's just say, Karaseer's seventeenth birthday party, had a hiccup or two... You'll learn all about it in Troika [A Story of The Federal Galactic Empire], soon enough!
