Even when jealousy is not an overwhelming problem, open marriage may cause other complications. For example, a five-year study of bisexuals observed a shift from open relationships to sexually monogamous relationships in many participants because they "felt that nonmonogamy was too time consuming, took too much energy, or was too complicated. They also thought that it got in the way of developing love, trust, and more intimate relationships with a partner". Numerous authors have argued that open marriages disrupt relationships by interfering with intimacy and provoking insecurities.