Hey, it's Epilogue, not Ending

Well, the character epilogues take place BEFORE they marry.

Also most of the paired characters' epilogues - Karn's, Lumi's, Ardam's, and Karashi's - seem to be about their professional lives, and don't go into their personal lives much, meaning that their lover could easily be present and just offscreen. Tesla's epilogue DID mention Ardam, so that leaves Drecker's as the only exception. Again, I just figure he wasn't quite ready to settle down yet - he probably will soon.