Mariah the scientist confirms romantic relationship with young thug

I'm not aware of any information about a person named Mariah the Scientist confirming a romantic relationship with Young Thug. Mariah the Scientist is a singer and songwriter, and Young Thug is a rapper, but I don't have any information about them being in a romantic relationship.

It's possible that you may be thinking of a different celebrity or a fictional story. If you could provide more context or clarify what you're referring to, I'd be happy to try and help you further.

It's also worth noting that celebrities often keep their personal lives private, and it's not uncommon for them to not publicly confirm or deny rumors about their relationships.