Gwen, a thirty-six-year old manicurist, is convinced that she is so beautiful that no man can resist asking her out on a date. Unfortunately, Gwen has never been able to keep an intimate relationship for very long because she quickly loses interest after initially falling "madly in love" and laments that no man really measures up to her standards. In addition, she has a tendency toward taking from a relationship rather than giving to her partner. Gwen also has a constant desire or need for admiration and feels entitled to be treated as important and unique as she believes she is. According to the course text, which personality disorder does this criterion most closely match?