Adele, one of the best-selling female artists in pop music, experienced a cruel heartbreak at the age of 18 when her boyfriend dumped her off and ran away with a gay friend.
A mere four hours after Adele declared her romantic intentions to the mystery man, he cruelly ran off with one of his gay friends, reports dailymail.co.uk.
Biographer Marc Shapiro penned the unofficial tome Adele: The Biography, which chronicles the 24-year-old singer-songwriter's childhood in north London as the daughter of a single mother.
He highlights the ups and downs of her love life, and recounts the incident on her 18th birthday which went on to inspire her debut record.
He writes: "One thing we know… Is that it was a first love gone terribly bad. Adele had professed her love and he did the same, she had known he was bisexual but, in the rush of romance, felt they could make it work.
"Four hours after laying their emotional cards on the table, the boy ran off with one of Adele's gay friends!"
Despite the humiliation Adele and the man tried again to make their relationship work but after four months of him cheating on her, Adele couldn't take it anymore.
She even writes about the drama on her official website explaining - "My debut album is about being between 18 and 19; about love. Daydreamer is about this boy I was in love with, like proper in love with, he was bi and I couldn't deal with that.
"All the things I wanted from my boyfriend, he was never going to be, I get really jealous anyway, so I couldn't fight with girls and boys."
Shapiro has written about Adele's father saying he was as an alcoholic whose condition nearly killed him, describing their relationship as "dead and gone."
Although her mother has remained a loving figure in her life, according to the writer, Adele found herself searching for the affection she never got from her father.