Subtitle from jacket.

"At twenty-one, Shandi Pierce is juggling finishing college, raising her delightful three-year-old genius son Natty, and keeping the peace between her eternally warring, long-divorced Catholic mother and Jewish father. She's got enough complications without getting caught in the middle of a stick-up in a gas station mini-mart and falling in love with a great wall of a man named William Ashe, who willingly steps between the armed robber and her son. Shandi doesn't know that her blond god Thor has his own complications. When he looked down the barrel of that gun he believed it was destiny: It's been one year to the day since a tragic act of physics shattered his universe. But William doesn't define destiny the way other people do. A brilliant geneticist who believes in science and numbers, destiny to him is about choice. Now, he and Shandi are about to meet their so-called destinies head on." -- from author's web page.