Met my bio dad...

About a month ago I posted about learning about my biological father and how it was causing problems at home. Well yesterday we met. He and his wife came to stay in the town over from where my DH and I live. Everything went wonderful. After our late lunch, we went and got our toddler. Their first grandchild and the first grandson for the family. They are absolutely enamored. I'm so worried about hurting my daddy because my son is "his boy". But DS loves my bio dad and his wife! They want to be in our life and us in theirs!