Romance Schmomance
I definitely considered book 1 to be a science fiction romance, but that's just me, personally. The relationship between Millicent and Ryker is still stronger than ever especially with their kids in the mix. They had their little moments they shared here and there, but never enough to my liking.
As for the science-fiction side, it's there 100%. I loved the constant action from beginning to end. As thrilling as it was, there was something that wasn't pulling me in. The multiple POVs and overwhelming introductions of different characters had me confused at times. But I'm going to say that because it has been years since my last read in this series, I'm sure I have forgotten who they were.
As far as K.F. Breene books go, not quite my favorite, but still an enjoyable read.