I'm thinking they might still be together, not 100% sure though. Either way, she wanted to pursue her career once again so he took a teaching post at the Academy (and look after Miral) so she could return to active duty. Her "year off" was spent working with the SCE, so not entirely wasted.
Commander Austin Harris, First Officer, Deep Space Nine (by FltCpt. Bossco)
8.01 - Darkest Before Dawn
(Chapter 8 added, 12/09/2015)