Seventy-six college couples were interviewed with Kohlberg's moral dilemmas interview, given the Mosher Sex Guilt scale and took a sex experience inventory. Men, women, and couples who were at the law and order stage of moral reasoning were higher on sex guilt than those at other levels of morality. Male sex experience was associated with morality but female sex experience did not vary with female moral reasoning. The pattern of results suggests that the males' moral reasoning is a better predictor of a couple's sexual behavior than is the females'. Males in mixed morality couples seem to be dominant in setting standards, which women accede to, even if they are guilty about their behavior. (Author)