I can't think of a single time there's been an instance of 'bisexual dating' on a TV show
Like the only straight 'dating' show I can think of is Love Island
With the likes of Dinner Date, I've never seen an instance where the person has the option of choosing menus from people of different sexes, but I've seen gay men choosing menus from men
(That's not to say bisexuals haven't appeared on such shows, but from my observations I've yet to see an episode focusing on bisexuals)