Meghan Markle allegedly holds control of her relationship with Prince Harry if the Green Line Test's result has anything to go by. This viral relationship theory claims the Duchess of Sussex calls the shots in their romance and their series of photos together prove it.

The Green Line Test is now circulating online. It features hundreds of viral relationship theories that are now gaining traction on Tiktok, including Meghan Markle and Prince Harry's.

This new trend claims that just analyzing a couple's picture will reveal who controls the relationship. Express noted Twitter user Rivelina created the test in 2020.

It features drawing lines across the couple's bodies to assess who leans more than the other. Rivelina said the one who leaned toward the other was less dominant, while the opposite was in control of the relationship.

However, body language expert Mike Carter told Mail Online this theory might "stand up to scrutiny" cause people usually lean physically toward things they want and like. Relationship coach Rachel New also agreed, saying leaning in means someone is willing to "accept influence" and go onboard the significant other's suggestions.

She explained men tended to be less good at leaning in, but if a man does so, it is a sign that he is secure and confident in himself. Though both partners would ideally lean in each other, the man leaning in means they have a healthy relationship.

So, Carter claims photos of Prince Harry and Meghan Markle suggest the latter holds dominance in their relationship. From their official engagement photos to their wedding photographs to their bombshell interview with Oprah Winfrey, it all shows the Duke of Duchess is leaning toward his wife.

However, it has been known Prince Williams used to be concerned about his brother's relationship. He did not only feel like they were moving at lightning speed, per Fox News.

Vanity Fair editor Tina Brown, who wrote "The Palace Papers: Inside the House of Windsor - the Truth and the Turmoil," Kate Middleton's husband was afraid that the former actress could not handle the pressures of royal life.

Brown alleged the Duke of Cambridge believed Meghan Markle should have more time to build a life in the U.K. and make friends. It was said to be hard for the Duchess of Cambridge back then, but the "Suits" star was a glamorous actress and the first woman of color to join the royal family, adding more pressure.

Prince Williams was also said to be afraid of Prince Harry's mental fragility and he would not be strong enough to handle all the pressures on Meghan Markle's behalf, along with all the issues he has to face. For one, the future king's relationship with Kate Middleton moved at a much slower pace.