PRINCESS KATE I Love William MORE THAN EVER

A GOOD FIT "Duty comes before all else," says a royals source, "but Kate knows she and William are in it together for life."

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Princess Kate and Prince William D are usually the poster children for dignified restraint, rarely showing public displays of affection. But during William's Earthshot Prize awards night in Boston in early December, the Prince of Wales couldn't help himself as he put his hand on his wife's bottom as they arrived, then sweetly rubbed her back once they got to their table. "We were all mesmerized by Catherine, Princess of Wales, but Prince William was the one who was the most affected!" a commenter who posted video of the royal PDA tweeted.

"He simply could not keep his hand off her body!" Kate's hardly complaining. In fact, a royals source tells In Touch that after a challenging year full of major changes, heartbreak and deep grief, she's telling friends she's more in love with William than ever. "She's sharing things no one knows about her marriage," says the source.