Marriage is one of the most important social institutions in all cultures and today societies. The relationship between couples is a permanent exchange of information and messages. Faulty communication is a major cause of the disintegration of a marriage. The purpose of this study was to investigate couples' communication styles with pre-marriage familiar, criteria of choosing spouse in pre and post marriage and love styles among couples. The participants of the current study were 92 couples. Couples filled Communication Patterns Questionnaire, Triangular love scale and criteria of choosing spouse. The results indicated that there are significant differences between criteria of pre-marriage with criteria of post-marriage among men and women. Men had more similarity in criteria of pre and post marriage and fewer changes in comparing to women. Also, there are significantly different in criteria of couples' pre and post marriage that were above 30 years old in marriage. In addition, criteria of marriage in this age category are different with younger ages. Intimacy, passion, commitment and criteria of post marriage have predictive effect on constructive communication styles of couples. The relationship between criteria of the marriage and communication style along with gender differences between couples showed its significance role of these variables in emotional relation kind after marriage.