Clampitt urges to be aware of the narcissist, saying, "Narcissists are tricky because what they spark at the beginning can feel like joy." They can make you feel incredible — just as long as you're making them feel incredible. But the second they feel at all threatened, things take a drastic turn.
What you need to do is dig deeper and question the feelings, where they come from, and if they're sustainable. If you're with a narcissist, on some level you know; it just might be hard to confront. At the end of the day, Clampitt has a helpful differentiator: "You don't want James Bond, you want the guy who spills his martini because he's so nervous to be talking to you."