@divine1966, I don't understand why you're responding to my post which directed to the OP, but since you responded to me, my concerns are for the child and for the OP's own sentiments regarding the infidelity. I personally would not feel comfortable with it, but this has nothing to do with me and is about the OP's own comfort level with it.

And the biological father is the real father. Just because one is raised by a step father, doesn't make him the real father. it would be up to the child's own perspective on the matter.