Mixophilia involves sexual arousal from looking at genitals and people having sex. This is like, but not exactly the same, as voyeurism.
More About Mixophilia
Mixophiliacs get aroused from watching other people have sex, with their consent and knowledge. Voyeurs, on the other hand, get their arousal from watching people have sex without their consent. Mixophiliacs can also enjoy watching their own genitals while having sex with a partner.
Mixophilia doesn’t have to be problematic; there are many people with this paraphilia who live normal sexual lives. However, a mixophiliac should seek treatment if the fetish gets in the way of their normal lives or becomes so important that no other sexual activity arouses them.