Pick an actress from before Ashes to Ashes, who ####ed Harry off camera, and the died off camera, and then came back in Ashes to Ashes as an alternate to the character who was in Ashes to Ashes.
http://www.loony-archivist.com/lowerdecks/crew.html
Tal celest for ####s sake!
Books is beautiful and she was in 13 episodes. (Extra with no lines)
Henley is a little older than Harry, but he has a mommy complex, so it's probably perfect.
(That's weird. The actress who plays Brooks, her real name is Henley.)
Jenkins actually had a working relationship with Harry from Warhead.
Ane Jetal. Wow. It's not just me, but all the extras are prettier than Jeri Ryan, right?
Kaplan. African-Korean-American babies are cute.
####ing Stadi. Dead in the pilot. Which would mean that their pre-existing sexual relationship consisted of sex in broom closest, which happened to other people in the first episode of Star Gate Universe, so it's not entirely out of the question.
Marla Gilmore, one of the Equinox 5 is who really needed a call back, but Jenkins is probably the most Harry to couple Harry with, short of a Delanney.
That's Vertigo?
If the twin sister he liked died, so Harry finally relented and let the other twin foaming at the mouth for him date him because the twin he wanted bought the farm, only to have the first twin come back to life and get all pissy about how Kim should have noticed that she was playing hard to get.
Dying: Hardcore playing hard to get.