To cause someone to have sex with you is a powerful stimulus and always provokes a sensation of power. Whether one is physically passive or active one is always psychosexually active. AIDS is no longer the reserve of homosexuals. Anyone who engages in unsafe sex is gambling with his life though the odds are much smaller than public hysteria would have us believe. Reality does not matter, though it is the perception of reality that matters.
Narcissists are, at times, suicidal.
I know of no heterosexual who would use his sexual preferences to define himself almost fully. Homosexuality has been inflated to the level of a sub-culture, a separate psychology, or a myth. This is typical of persecuted minorities. However, it does have a feedback influence on the individual. Preoccupation with body and sex would tend to narrow down the types of narcissism available to homosexuals.