Ask HN: When is flirting at the workplace sexist?

Flirting can be inappropriate for the workplace irrespective of whether it is sexist and sexist remarks can be inappropriate for the workplace irrespective of whether the remarks are flirting.

My advice is to avoid behaving as if the workplace were a singles bar and to avoid behaving as if the workplace were...well whatever sort of place sexist behavior might be deemed appropriate.

Good luck.