A Professor's Affair by Donald F. Averill

Dr. Ned Curtis, a young professor of geology at Ocean Vista University in Southern California, is trying to cope with a problem. Two beautiful young women, one of which is his student, are attracted to him and he is interested in both of them. However, both women are married, which creates a major hurdle. One woman is a friend from long ago, and the other is a recent acquaintance. He knows his limitations; he can only have a relationship with one woman at a time or face disaster. What is he to do? He must keep each woman from knowing about the other. Should he develop a relationship with the blonde or the brunette? And what about their absentee husbands? Should he fear reprisals?