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From the Business Insider website:
…the common psychological theory that we are attracted to people who remind us of our parents. If their relationship was abusive, or you were always seeking approval as a child, you may look for a partner with those same traits because you’re trying to heal wounds from the past, she says.

Narcissistic behavior may seem “normal” in these cases because you might be accustomed to being treated badly by those you love. Anything familiar, whether good or bad, feels comfortable, Ward says. The problem is that a comfortable relationship isn’t the same as a healthy one, and narcissists are unlikely to give you what you need on a long-term basis.

According to Ward, narcissists often seek out sensitive, kind people, because they can use their empathy to take advantage of them.
Mark