Casting shadows a novel

In 1954, sixteen-year-old Ruby Wilkes never expected to trade the abusive life she led with her father, for the loveless marriage to a stranger almost twice her age. With time, she finds it easy to love her husband; but finds herself in the arms of her best friend?s husband. How do you choose between the man who has given up everything to save you, and the man you would give everything up for?