how do I make contact with my biological father?

[Leenz333]

I found him on facebook ,with confirmation from my mother but his profile was locked to only his friends to send him a msg and the only option left was to add him as a friend so I did, got a msg back,asked a few questions then it was his wife I was talking and she was rather rude about the whole thing and didnt understand anything.So I didnt make contact to him directly, How do I contact him without her interferring just to let him know I've been searching for him

[Fafa Dfgnk]

when u know his name u can search for adress in the internet