The parties married in community of property in 1960. The respondent supported the appellant through medical school and subsequently worked in his medical practice, managing its finances. The marriage was generally happy until 1977, when the appellant began an extramarital relationship with a much younger woman, Miss Lintvelt. The appellant left the common home in September 1979 to live with Miss Lintvelt. He instituted divorce proceedings, initially under the common law before the Divorce Act 70 of 1979, and later under the Act. The respondent, despite the appellant's infidelity and cohabitation with another woman, wished to preserve the marriage. The trial court dismissed the appellant's claim, finding he had failed to prove irretrievable breakdown.