CALIFORNIA: US President Joe Biden said good sex is important for a long-lasting marriage. This was revealed in a book written by New York Times White House Correspondent Katie Rogers, which describes the first ladies from Hillary Clinton to Jill Biden.

The author describes Joe Biden's 47-year marriage in the 276-page book. Joe Biden's references to sex are few but his remark has already led to a big discussion.

The book said that Biden likes to stay home loving his wife while the children sleep. He said that he was not interested in running for the presidency in 2004. The author also said that Biden, who was then a senator, was deeply in love with Jill. The author states that Joe Biden may have given up his bedroom desires in order to win the presidency of the United States, and he says that good sex is the key to a lasting and happy marriage.

In 1972, Biden lost his first wife Neilia and daughter Naomi in an accident. The book described the pain and isolation he felt at that time. Then he met Jill, an English teacher at a community college. Biden proposed to Jill more than five times and they finally got married in 1977. The book also said that Jill continued her career as first lady. The book also talks about how Biden and Jill used to send messages over the phone to solve problems without fighting in front of security officers when he was vice president.