Slang. An
asexual person who experiences romantic attraction. The term 'Ace' (short for
asexual) is used by asexuals to describe themselves, much like the modern day self-describing usage of 'gay' by homosexuals. Calling yourself an Ace of Hearts means that while you are
asexual, you still feel romantic attraction. On the other hand an aromantic asexual, that is a person who does not experience romantic attraction, would describe themselves as an Ace of Spades.