Under the Yum Yum Tree, which had a nearly 175-performance run on Broadway, concerned a landlord who tries to seduce his tenant; the production starred Gig Young, Sandra Church, and Dean Jones. A 1963 film version starred Jack Lemmon, Carol Lynley, and Jones.
He had two other plays on Broadway: 1964's P.S. I Love You, starring Geraldine Page, and 1984's Alone Together, starring Kevin McCarthy and Janis Paige.
Roman also wrote numerous screenplays and teleplays during his career, including A Kiss Before Dying, Paper Lion, McQ, and The Ernest Green Story.
He is survived by his wife Evelyn, daughter Catherine, and son Steve.