2 Answers

Keep things as they are and get to know the biological child if possible and hope the other parents feel the same.  Everything happens for a reason I trust that God would not allow a mistake if there was no reason for it. 

You my dear, must have been watching world news lately. I don't think I could ever answer this question with 100% certainty unless it actually happened to me. I know what I would like to do, I would like to keep the child I have come to love as my own and, gain custody of my biological child as well. But... I'm really big on the concept of self sacrifice when it comes to our children, so, if my biological child was happy with the family that he/she has come to love, then I think I would leave the child with this family. It would be too devastating to tare the child away from the parents-family and friends he/she knows and loves. I would make sure, that we  all stay in touch with one another and become like true family.