The pair, who have a 6-year-old daughter together, had both been searching for their mothers for years after being abandoned as children.
After an extensive search, the woman was finally able to speak to her mother on Brazilian Radio Globo’s The Time Is Now programme, a show that specialises in reuniting lost relatives.
At the end of the segment, the mother, Maria, revealed to her daughter, Adriana, that she also had a son called Leandro with a different man than her father.
Regardless of the revelation, the pair, who were never legally married, have reportedly said they are going to stay together.
They didn't knowingly participate in an incestuous relationship. They were complete strangers until they met. I think it's fine. Personally, I couldn't sleep with someone who I found out was related to me, but what others do (as long as both are comfortable and fine with the circumstances) is none of my business. I just hope they tackle the situation carefully with their child and seek genetic counseling for any future children.