Amid the tumult of the White House and the pressures of politics, Joe and Jill Biden’s romance remains a beacon of enduring love after 47 years of marriage.

Their affectionate gestures, from intimate kisses before boarding Air Force One to cozy date nights, reflect a bond that defies the strains of public life.

Yet, behind closed doors, President Biden has revealed some eyebrow-raising secrets about the source of their marital strength, much to his wife’s chagrin.

In an exclusive excerpt from Katie Rogers’ forthcoming book, ‘American Woman: The Transformation of the Modern First Lady, from Hillary Clinton to Jill Biden,’ obtained by DailyMail.com, Biden jokingly attributes the success of their marriage to ‘good sex,’ a revelation that reportedly irks Jill.

The president’s candid remarks, shared with aides, underscore the couple’s dynamic, with Biden’s unfiltered humor adding a playful twist to their enduring partnership.

But their story goes beyond romance. Jill Biden, a formidable presence in her own right, has played a pivotal role in her husband’s political journey, particularly following the tragic death of their son Beau in 2015.

As Rogers delves into the evolving relationship between the Bidens, she unveils Jill’s transformation into her husband’s trusted adviser, guiding him through the trials of multiple presidential campaigns and ultimately to the pinnacle of power in the 2020 election.

While Jill’s public persona exudes grace and warmth, she’s also known for her fierce loyalty and protective instincts, both toward her family and her husband’s political aspirations.

Despite the intense scrutiny and challenges they face, the Bidens remain steadfast in their commitment to each other and their family, weathering storms with resilience and love.

As the Biden saga unfolds, Rogers’ book offers a rare glimpse into the intricate dynamics of one of America’s most influential couples, highlighting the enduring power of love and partnership in the face of adversity.