Redhead by the side of the road / Anne Tyler.

Micah Mortimer isn't the most polished person you'll ever meet. His numerous sisters and in-laws regard him oddly but very fondly, but he has his ways and means of navigating the world. He measures out his days running errands for work - his TECH HERMIT sign cheerily displayed on the roof of his car - maintaining an impeccable cleaning regime and going for runs (7-15, every morning). He is content with the steady balance of his life. But then the order of things starts to tilt. His woman friend Cassia (he refuses to call anyone in her late thirties a 'girlfriend') tells him she's facing eviction because of a cat. And when a teenager shows up at Micah's door claiming to be his son, Micah is confronted with another surprise he seems poorly equipped to handle. Redhead by the Side of the Road is an intimate look into the heart and mind of a man who sometimes finds those around him just out of reach - and a love story about the differences that make us all unique.