Isidro Medrano Garcia, 42, faces a maximum sentence of four years and four months in prison at his sentencing hearing on April 16.
An Orange County jury convicted him of three felony counts of lewd acts on a minor. He was acquitted of two felony counts of kidnapping to commit a sex crime and rape.
Bank said the accuser used Garcia to escape from her mother, whom she hated, and then decided she had no further use for him.
Los Angeles Times staff writer Christopher Goffard contributed to this report.