Two wrongs make a right in this view, however the injustice in some individual circumstances. The expressive welfare of the individual is not as importance as community, fitting in, and justice for peoples considered as a whole. The social conservative relies on family as the equalizer, although there are obvious problems with this view. But the socialization of normal males through women and marriage is supposed to be such an automatic process that it is not perceived as a moralizing one by the participants. The libertarian is conscious of unfairness, but is more likely to emphasizing making the rules fair at the individual level essentially through the marketplace and freedom to contract, and enforcement of contracts and promises that are made.
Some libertarians subscribe to a very simple notion of morality.
An act is morally wrong only if the act aggresses upon another person without consent. Any other personal behavior is at worst morally neutral. Some acts and value systems have unforeseen consequences, especially for more vulnerable people. Moral values may properly be developed in conjunction with religious faith. Government cannot be trusted to make sensitive moral delineations without becoming corrupted by the political barter that such determinations require.