HUMAN ELEMENT by AJ Powers.
Here is the description from Amazon:
Aaran has legitimate reason to believe he is the last free-thinking human alive.
It's been months since he met someone who wasn't trying to kill or convert him, and the growing angst of nomadic isolation is taking a toll on his already weary state of mind.
Aimlessly wandering around the suburbs of Cincinnati, Aaran's days all look the same: find food, evade capture, and search for a dry, offline place to rest his head each night.
Rinse and repeat.
However, after a close call with a Sentinel--an AI-controlled soldier--Aaran unexpectedly finds himself in the company of Hadas, a beautiful, yet dangerous woman. A shaky alliance is formed between the two, and together, they search for reasons greater than "just surviving" to keep them going in such a godforsaken world.
--Good stuff. Recommended.