Asiaphile is a term used to refer to someone who is not of Asian descent who is attracted to or aroused by people who are of Asian descent. Most commonly this term is applied to Caucasian men who fetishize Asian women. In gay communities the term "rice queen" is used in the same way.
More About Asiaphile
Asiaphile is considered a derogatory term. It indicates that the man in question is treating a woman's ethnicity as an erotic turn on and fetishizing her culture. This is not a term one would to apply to all people in interracial relationships with Asian partners.