Why do you refer to yourself as "gay" (I. E. A gay mermaid) when you have sex with men? That is straight up disrespectful to actual gay people

boy it’s almost as if someone can like more than one gender! wow! it’s almost as if the entire world, including the rest of the gay community, constantly erases the existence of bisexual and pansexual people! amazing! it’s almost as if we have to identify under the label gay because we’re completely ignored otherwise! incredible! it’s almost as if gay is universally acknowledged as a universal term! mindblowing, i know!