Kate Middleton didn’t hold back on St. Patrick’s Day. Not only did she share details about her future travel plans and how she really feels about her husband's beard, but she also revealed the valid reason why she and Prince William,

In an interview with Fox News, Yes, Ma’am: The Secret Life of Royal Servants author Tom Quinn dropped a pretty big allegation about what William is like behind closed doors, specifically what staff says about him.

There’s a joke among the staff that Kate treats William as the fourth because he occasionally behaves like one,” Tom Quinn claimed.