Are they a narcissist or an avoidant? That doesn't matter, I have three more important questions for you.
Number one is: when you're feeling emotionally unsafe in that moment are they able to help you feel emotionally safe again?
Number two is: if you know what your needs are, are they meeting enough of your needs in that relationship?
Number three is: how do you feel when you're around that person? Do you feel anxiety or do you feel anxiety when you're away from that person, because chances are, something is really off about that relationship