In an appearance on"Good Morning America,“Harry explained this word choice.

“There has always been this competition between us, weirdly.

I think it plays into this heir-spare,” he said.

Prince William and Prince Harry standing

Judi James, a body language expert, noted this competitiveness between the brothers in a2009 interview clip.

These tensions only escalated over the years as William and Harry grew older and had different life experiences.

“They made each other visibly happy, and therefore I was happy too.”

Kate Middleton and Prince William smiling and waving on their wedding day

Who could deny it?”

However, rather than blaming Kate, Harry accuses “life” itself of severing their sibling connection.

As the ceremony ended, the Duke of Sussex felt left behind.

Prince Harry walking beside William and Kate at their 2011 wedding

It was a life-changing experience, and, indeed,William wasn’t the same after marrying Kate.

“I assumed they’d have me over any minute now, any day.

But day after day it didn’t happen,” he wrote, perIndependent.

While he appreciated they were busy new parents, he felt like an outsider and possibly a third wheel.

William was concerned about Harry giving a best-man speech, he wrote.

I might say something wildly inappropriate."

Instead, James Meade and Thomas van Straubenzee, two friends of William, jointly served as best man.

Harry claims that the palace kept this detail quiet to prevent the media from intruding on their privacy.

“The speech was a three-way.

Harry MC’d it.

Despite William’s concerns about Harry’s speech, this guest believes his remarks were comedic gold.

“Harry was the funniest of the three.

He had the guests in stitches.”