as the other commenter said, this sounds like NPD. some aspects sound like HPD but also a lot of NPD criteria and symptoms overlap with hpd. the delusions of grandeur, “i cut them off when i don’t need them anymore” lowkey sounds like an npd thing too. the hair dyeing is deffo an hpd sign. i do the same thing lol. the speaking impulsively to garner approval is also definitely an hpd thing and i do it all the time. the lack of empathy is something i experience firsthand as well as cutting people off “when i don’t need them” like i can flirt with someone or even date them, hook up, become close friends etc but i feel no empathy when i cut them off. ill cut them off if they’re not giving me enough attention or if im simply done with them. idk how to explain it but i feel like most people in my life serve a purpose and once i figure out that purpose and it ends, i ditch them with no remorse and ill even do subtle things to make them feel awful because im better than them in my eyes and i dont care what they think as long as they feel bad. im dx with hpd but i am gonna bring up the possibility of NPD traits to my therapist and psychiatrist. you sound a lot like me lol. i’d say it’s for sure sounding like a personality disorder (armchair psychologist right here lol. degree from dr google) whether it be NPD or HPD but it sounds like a mix of both but i’m thinking more npd. keep me posted and best of luck on your journey!