Desirable sexual intercourse leads to marital satisfaction and mental health (
1). The world health organization defines sexual health as concordant function of mind, sentiments, and body contributing to promotion of social, spiritual, and personality dimension of individuals and bringing them to perfection (
2). Intimacy in sexual relations is an important behavioral pattern based on satisfaction and love (
3). Sexual intimacy prognosticates the overall health of women and it requires expressing thoughts, feelings, sexual fantasies, and propounding sexual needs with the spouse. This kind of intimacy arouses sexual desires in couples, and it has an important role in sexual and marital satisfaction (
4). One of the important factors in marital and sexual satisfaction in females towards their husbands is sexual assertiveness (
5). Assertiveness is a mental and social sense to the personal perceptions or interpretation concerning how to show emotions in sexual relations (
6) and includes the ability of individuals in commencing the required sexual activity, refusing unwanted sexual activity, and protecting one from unwanted pregnancies and sexually transmitted diseases (
7).
Not having certain sexual skills due to the dissatisfaction about sexual behavior, being exposed to sexually transmitted diseases, and having a forced sex, especially an inability to refuse unwanted sexual activity (intercourse) can impose many problems on women (
8).
Sexual disputes and problems are the leading cause of divorce, and even in Iran, the divorce statics indicate the significant role of sexual disputes and problems on disintegration of families (
9). The findings indicate that 50% to 60% of divorce cases are due to the sexual problems and dysfunctions (
10). Nowadays, the felicitous and conscious understanding of sexual instinct is far more important than sexual intercourse; furthermore, most of the incorrect performances of the couples are due to the lack of sufficient sexual knowledge and sexual relation skills (
11).
The connubial compatibility, life satisfaction, and eventually general health of couples can be promoted by developing sexual relation skills (
12). Due to the correlation among sex quality, sexual dysfunction, and low quality of life, there is a need to study assertiveness, enrichment, and improvement of the quality of sex relations in married couples (
13). Sexual dissatisfaction on the one hand and the demand of the couples for improvement of sexual relations on the other indicate the importance of this issue and the needs of couples for intervention and specialized training (
14).