I know who my birthson is!

I don't know if I'm posting in the right forum and if not could someone redirect me and tell me where I should post? I placed my son through Gladney in 1986. Closed adoption and I only knew the parents first names and his first name. Anyway, to make a long story short, I was able to get the birth records for the day he was born and there was only one Paul born that day. With a little investigation and the internet I now know who he is, where he lives, his Facebook, his phone number and address. I have put my name in the Texas Registry (the "right" way to make contact.) He has not. I would love to hear any suggestions on first contact or if I even should contact him. He is 23. I would love to be able to tell him I love him but I don't want to enter his life at a time that he may not be ready. Any suggestions?