The Historian by Kathryn Judson

Tomas is living in a time of turmoil but, wrapped up in his government job, he doesn't know it - until war breaks out, and he suddenly finds himself caught between the totalitarian government he's loyally served his entire life, and some fascinating rebels he never dreamed existed. He doesn't trust either side, and it appears that people on both sides are all too happy to return the favor. Meanwhile, he's surrounded by too many available women, but in the Subterran world, the rule is 'hands off the women' except for a man with his wife. But it's harder than he could have imagined to find a wife. And then there's the little problem of having somehow landed among conscientious objectors. During wartime. So, does he stick with his new and unpopular friends, or escape to join the rebel fighters, or try to go back to the only world he knew before this whole mess started? And did we mention the problem of too many women who must be kept at arm's length for now? And how hard it is to...