I personally find this kind of social media PDA really distasteful, but I've seen regular people discussing personal details on Twitter, including their ongoing menstruation. As long as they're not inciting harm or causing harm, it's not really my business.
These 2 are clearly doing it for attention. And the tactic is succesful, going by the fact they're getting non-fans to screenshot and post elsewhere. Free marketing from people who don't like them.
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