Introduction: Sexual intimacy within any long-term relationship is very important for the relationship to last (Armstrong, 2006). Married and cohabiting couples must feel intimately comfortable to be sexually intimate. Sexual intimacy is defined as sexual intimacy with one's partner to a level where both individuals are aware of what their partner likes sexually and what they expect (Armstrong, 2006). Once they reach the comfort level of being intimately comfortable, couples express to their partners what they expect sexually (Armstrong, 2006). Many things are related to sexual intimacy and long-term relationships with married and cohabiting couples. Some examples include sexual satisfaction, infidelity, sexual dysfunction, separation etc. (Breitmaier, 2010). The current study focuses on how putting more time and effort into sexual intimacy is important for long-term relationships to work. The following literature helps support the hypothesis why sexual intimacy is important for heterosexual couples who have been married or in a cohabiting relationship for more than two years. Literature Review: In a research article by Breitmaier (2010) an empirical study on sexuality and religiosity was done to investigate the importance of sexual intimacy between a Christian married couple. One hundred and ninety couples were administered a sexual attitudes and behaviors survey to complete prior to the sexuality seminar, and eight weeks later fifty couples took the survey again after the sexuality seminar (Breitmaier, 2010). Couples participating in this study included couples with martial problems due to sexual dysfunction, low sexual satisfaction, and couples who desired greater marital enrichment (Breitmaier, 2010). Breitma...... half of the paper ......nship between housework time and sexual frequency. Journal of Family Issues, 31(2), 135-163. Haning, R. V., O'Keefe, S. L., Randall, E. J., Kommor, M. J., Baker, E., & Wilson, R. (2007). Intimacy, likelihood of orgasm, and conflict predict sexual satisfaction in heterosexual male and female respondents. Journal of Sex & Marital Therapy, 33(2), 93-113. Kornrich, S., Brines, J., & Leupp, K. (2013). Egalitarianism, housework and sexual frequency in marriage. American Sociological Review, 78(1), 26-50.Moore, K. A., McCabe, M. P., & Brink, R. B. (2001). Are married couples happier in their relationships than cohabiting couples? Intimacy and relationship factors. Sex and Relationship Therapy, 16(1), 35-46. Sassler, S., Addo, F. R., & Lichter, D. T. (2012). The pace of sexual activity and the subsequent quality of the relationship. Marriage and family journal, 74(4), 708-725.