David R. George III wrote:
I also included a relationship between Krissten Richter and Etana Kol in my Mission: Gamma novel, Twilight. I think I introduced the relationship, and perhaps one of the two characters, though if I recall correctly, that relationship had been crafted for a subsequent novel; it just made dramatic sense for the romance to be shown at an earlier time in the story arc.
Sorry David - Mike and I introduced the characters first in our Marvel Comics DS9 series, then transported them over via Marco to the Mission Gamma series. You wrote them first in the MG books, but they were our characters, and part of the original bible for MG.