Look for instances of sexual harassment. I’ve heard from friends about lesbian restaurant/bar managers hiring their girlfriends and firing them when the sexual relationship(s) soured. Also heard about catty infighting at a hospital when lesbian doctors and nurses had it in for their ex-es when those relationship soured or advances were rejected.
Homosexuality is a mental illness and was described as so until about 1980 when the homomafia got it expunged from the DSM. Never hire mentally ill people.