Gay incest. Pronounced with the emphasis on the incest because it is not about being gay, it is all about the fam.

Briefly, "the realization that each random passerby is living a life as vivid and complex as your own." Originally from the Dictionary of Obscure Sorrows, which has a lot more beautiful neologism definitions like this you might enjoy.

Incest with a member of the same sex

When two gingers date/hook up