Xenophilia
Xenophilia is a sexual fetish for the extremely exotic, unusual, or alien to a person. While "xeno" is a term that is often taken to mean literally otherworldly, or alien (a la "Xenomorphs" from the Alien franchise), the Latin word "xeno" more properly refers to foreign things or people. Hence, "xenophobic" refers to people who are uncomfortable or afraid of any race not their own.
Xenophilia can be expressed as a direct fetish or interest in extremely new people and experiences, races completely outside one's familiarity, erotic thoughts about otherworldly beings, or even fantasy eroticism involving inhuman and exotic creatures (although this usually comes under teratophilia in these cases).
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