'Lover' in the Bible

By taking as her lover another man, and keeps it secret so that her husband has no knowledge of it, and there is no witness against her, and she is not taken in the act;

And he will make her take an oath, and say to her, If no man has been your lover and you have not been with another in place of your husband, you are free from this bitter water causing the curse;

But if you have been with another in place of your husband and have made yourself unclean with a lover: