Early Morning Riser by Katherine Heiny
Duncan is charming, good-natured, and handsome. He has also slept with nearly every woman in Boyne City, Michigan. Jane sees Duncan's old girlfriends everywhere, and while she may be able to come to terms with dating the world's most prolific seducer of women, she wishes she didn't have to share him quite so widely. His ex-wife, Aggie, still has Duncan mow her lawn. And his coworker Jimmy comes and goes from Duncan's apartment at the most inopportune times. Jane wonders how the relationship is supposed to work with all these people in it. Not to mention most of the other residents of Boyne City, who freely share with Jane their opinions of her choices. After a terrible car crash, Jane's life is permanently intertwined with Duncan, his ex-wife Aggie, and his co-worker Jimmy. And she knows she will never have Duncan to herself. Read a sample.