For years, Americans have speculated about the status of Bill and Hillary Clinton’s marriage.

They have often wondered if Hillary shrugs off the humiliations from Bill’s affairs so they can advance their careers.

But one insider has just revealed the truth and it’s even worse than you can imagine.

Mark Penn was the Clinton’s pollster and chief strategist for Hillary’s failed 2008 Presidential campaign.

Penn has authored a new book, “Microtrends Squared: The New Small Forces Driving Today’s Big Disruptions,” where he pulls back the curtain on the Clinton marriage.

In his book, Penn alleges that theirs is an open marriage.

He even compares them to the villainous Frank and Claire Underwood on Netflix’s House of Cards.

The Daily Mail reports:

“The Clintons have ‘at least a one-way open marriage’, their former veteran pollster claims in his new book – in which he also bashes Hillary’s 2016 presidential campaign.

Mark Penn, who served as a pollster for Bill Clinton in the 1990s and chief strategist for Hillary‘s 2008 presidential campaign, says that the political couple’s open marriage was possibly ‘not by choice’.

He even references Kevin Spacey and Robin Wright’s characters on the hit political drama House of Cards, where the fictional first couple, Frank and Claire Underwood, ‘have numerous partners, including one who sleeps at the White House’.

Penn opens up about the Clintons in his upcoming book, Microtrends Squared: The New Small Forces Driving Today’s Big Disruptions.

‘It’s not hard to conclude that Bill and Hillary Clinton didn’t have at least a one-way open marriage,’ he writes. ‘Perhaps it was not by choice, but the stories accumulated over the years until the fact of it became apparent.

‘There was also no question that at the same time their relationship was so deep and enduring. If this was the model of the first couple, what did it mean for the rest of the country?’

Penn claims that open marriages are ‘perfect’ for Hollywood stars and other A-listers, pointing out that it could be ‘more stable’ than having serial marriages.

‘Hollywood usually does as Hollywood writes. For example, Frank and Claire Underwood in House of Cards have numerous partners, including one who sleeps at the White House, as they pretend to ignore it. There seems to be a rage of jealousy under the surface.’”

Hillary standing by Bill during the Monica Lewinsky affair was one reason Bill was able to survive the scandal.

Many felt at the time that the only reason Hillary stood by her man was because if Bill’s Presidency went down in flames, so did her political future.

Now that an insider has given a sneak peek into what may be the truth about the Clinton marriage, do you believe it’s a marriage of political convenience?

Let us know your thoughts in the comment section.