It was an unlikely family reunion when a local man discovers the identity of his biological parents, leaving him shocked.

Nathan Boos of Tilden, Wisconsin was adopted at birth and never knew who his biological parents were. "Growing up I always knew that I was adopted, it just never crossed my mind that I would ever find my parents,” he said.

Nathan's adoptive parents knew who his biological parents were but because Nathan never asked, they never told him. One day, Nathan’s mom noticed that Nathan was Facebook friends with his biological father. After continuing the conversation with his adoptive mother, Nathan discovered his biological father is a truck driver, just like him. "She just went on my Facebook and went through my friends list and brought up his picture and I said get out of here,” said Boos.

Turns out, Nathan's biological father has been working at Rock Solid Transport in Chippewa Falls. The two men have actually been working together for the past two years. "He messaged me on Facebook one day and asked me if I knew his biological mother and I'm like yeah that's my ex-wife…and I about fell out of my seat…I'm like oh my god," said Bob Degaro of Chippewa Falls.

Bob, who has two other children with his ex-wife, says the choice to give Nathan up for adoption was a difficult one caused by financial stress. "Back then I wasn't much of a dad. His biological mom had chosen the adoptive parents because they were somewhat related…distant cousins I believe but I didn't know that," said Degaro.

Both say they're excited to continue growing the friendship they already had."It’s still kind of a shock and there's days I'm not sure exactly what to say or how to act…I mean he is my son but we didn't have that father son relationship growing up and then we became working partners before we knew who we really were," said Bob. Nathan says they’re just taking things one day at a time, or one mile at a time as truck drivers say.

Both men say the unlikely reunion has brought them both a sense of peace and they plan to continue building their friendship. Nate is set to get married soon and says he's looking forward to Bob being there on his special day.