A man identified as Tom Nuveman met his son, Jim Hayes for the first time after 50 years when the two were linked by a DNA test.

Tom Nuveman told "Good Morning America" that finding out about his biological son, Jim Hayes, was "life changing."  

His son, Hayes told "GMA" that he always knew he was adopted and grew up in a loving Midwestern home. His father was a policeman and his mom a waitress. "I also have an adopted brother. We talked about it openly" he said.

In his 20s, however, Hayes said he became curious about his biological parent and reached out to the adoption agency that facilitated his adoption.

The agency said they could only disclose limited information about his birth mother, and Hayes said when he reached out to her she didn't want to meet him. "I was a little bit perturbed, like, how could this be? I was probably more surprised than anything" he said.

Hayes said he asked her about his biological father, however, "she was not willing to share anything."  Another 20 years went by, and Hayes eventually got married and started a family of his own, but he still often wondered about his biological father.  

Last year, he said friends encouraged him to take a DNA test from Ancestry.com and he discovered some unexpected news. "It says father-child, and I dig deeper and it says 'You are a match, this is your parent. And it gives the initials, but there is no name" he said. 

After months of internet research, Hayes said he was able to figure out that the initials "T.N." stood for Tom Nuveman, a man living in California with his wife of 44 years, Susan, and their two children. 

Nuveman said he had a brief relationship before he was married, and apparently when he and the woman broke up, she was pregnant but never told him. Eventually, she gave the baby up for adoption.