1956: Edmund Bergler, "Homosexuality: Disease or Way of Life"
In the preface to his book, psychoanalist Edmund Bergler says:
"It is granted that heterosexuality per se does not guarantee emotional health.... But there also exist healthy heterosexuals, and there are no healthy homosexuals...."
His text adds:
"Homosexuals display an amount of irrational and violent jealousy unparalleled in heterosexual relationships." (Page 25).
Edmund Bergler. Homosexuality: Disease or Way of Life. Publisher: Hill and Wang. First Edition edition 1956. ASIN: B0000CPF04. 302 pages.