When you think of leaders you admire, you likely imagine them as authentic, at least in the sense of seeming genuine, real, and trustworthy. Science confirms this is usually the case. For example, data tells us that trustworthy leaders stand out for their "no thrills" patterns of behavior: They are, in other words, predictable, reliable, and unlikely to shock their employees or followers with erratic or excitable behavior that freaks them out.
When it comes to romantic relationships, there are numerous ways in which neuroticism may undermine relationships. Neuroticism is associated with negative emotion, which itself is predictive of relationship failure; those high in neuroticism are prone to complaining, may interpret innocuous comments as criticism, and are generally somewhat dissatisfied with, and critical of, most things in their environment including their partner.