Intimate couple relationships are integral to the lives of most adults, and a typical stepping-stone in beginning a family. Thus, it is imperative to understand personal and interpersonal factors associated with healthy, long-lasting relationships (e.g., relationship satisfaction). One factor that may promote healthy relationships is mindfulness. Mindfulness has been linked to positive physical and psychological outcomes (see Kabat-Zinn, Lipworth, & Burney; Carmody & Baer, 2008), but has been minimally studied in the context of couple relationships. Research has also identified the corrosive effect of hostile communication cues on relationships (Gottman, 1994). The current study examined associations between mindfulness, corrosive communication cues, and relationship satisfaction in the context of cohabiting couples using actor-partner interdependence models (APIM; Kenny, Kashy, and Cook, 2006). Self-report questionnaires assessed five aspects of mindfulness: observing, describing, awareness, non-judgment of inner experience, and non-reactivity to inner experience. Women's non-judgment of inner experience, one of five mindfulness facets, was positively associated with the women's own relationship satisfaction. Other facets of mindfulness were not significantly associated with relationship variables. These findings and considerations for future research are discussed.