Adriana, 39, who gave no last name, went on Radio Globo's The Time Is Now (which helps people find lost family members) and talked to her mother for the first time.
The big news: Adriana had a brother who had been given up as a child and raised by a relative, just like Adriana was.
Bigger news: His name was Leandro, just like Adriana's husband.
The two men, in fact, had the same last name.
"I don't believe that you're telling me this," said a sobbing Adriana, the Daily Mail newspaper reported. "Leandro is my husband."
The couple has a 6-year-old daughter.
Adriana was given up at the age of one and raised by her father, according to the show.
Her husband Leandro, 37, learned at age 8 that he'd also been abandoned at a young age, and then raised by his stepmother.
By the time Adriana and Leandro met, each had spent years seeking their birth mother—without knowing it was the same person.
"Now I'm scared to go home and find out that Leandro doesn't want me anymore," she said. "I love him so much."
She later said they will stay together "whatever anyone might think."