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Relationship distress has deleterious effects on mental health, physical health, and quality of life. Although many couples report relationship distress, one barrier to seeking services is that one member of a couple may be too busy or refuse to participate. Relationship interventions offered to individuals have shown promising efficacy, but, as most are offered in-person, barriers to their reach remain. To increase the reach of such interventions, the present pilot study examined the efficacy of a fully web-based relationship intervention for individuals (OR-I). The program was adapted from the couple version of the OurRelationship program (OR-C), which is effective in improving relationship and individual functioning (Doss et al., 2016). Results indicated that couples randomized to the OR-I program, compared with couples in a waitlist control group, saw significant improvement in quality of life (d = 0.69), work functioning (d = 0.44), and perceived health (d = 0.49) during treatment. Furthermore, gains in quality of life and perceived health for the intervention group were maintained over short-term follow-up. However, there were no significant improvements in relationship functioning or symptoms of depression or anxiety. When comparing the efficacy of OR-I and a demographically matched subsample of OR-C, results showed that change in outcomes did not significantly differ by program. Overall, with some adaptations, OR-I may be a viable option for individuals seeking relationship help. Limitations, potential adaptations, and future directions are discussed in-depth.