Addressing the judges, she began: “When an employer fires a male employee for dating men but does not fire female employees who date men, he violates Title VII.

“The employer has, in the words of Section 703(a), discriminated against the man because it treats that man worse than women who want to do the same thing. And that discrimination is on the basis of sex.”

https://www.pinknews.co.uk/2019/10/09/supreme-court-title-vii-pamela-karlan-opening-argument-gay-lgbt/?utm_source=newsletter&utm_medium=email&utm_campaign=PNnewsletter