Japanese word meaning lover or a lover in a illicit realationship, is often used when speaking about a homosexual realationship or a realationship that would not often be accepted by the mass majority. in a gay realtionship the aijin would be the more femanine or uke in the realtionship.
Boys friend: "so is that new boy from school you're new aijin?"
Boy: *smirks* oh course he IS very cute after all
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