From Amazon:
Ivy Cooper is 52 years old when Ansel Fleming first walks into her life. Twenty years her junior, a musician newly released from prison on a minor drug charge, Ansel’s beguiling good looks and quiet intensity instantly seduce her. Despite the gulf between their ages and experience the physical chemistry between them is overpowering, and over the heady weeks and months that follow Ivy finds her life bifurcated by his presence: On the surface she is a responsible mother, managing the demands of friends, an ex-husband, home; but emotionally, psychologically, sexually, she is consumed by desire and increasingly alive only in the stolen moments-out-of-time, with Ansel in her bed.
Don't Be a Stranger is a gripping, sensual, and provocative work from one of the most remarkable voices in contemporary fiction.
I enjoyed this book very much. It's been compared to "All Fours" by Miranda July (which I have not read, but want to.)