That could be because he didn't have a close bond with his bio father?
Have you ever experienced being one of the participants in an 'open' adoption arrangement? I think if you were one of the people involved in the 'triad', as it is called, you might better understand how emotionally complex the situation can be.
here is an excerpt from one article explaining what I mean:
The open adoption experience can vary with every child.
For an adopted child, possible disadvantages of open adoption include:
- Reduced ability to assimilate into a family– Interaction with the birth family may make it harder for the child to assimilate into the adoptive family.
- Sense of rejection– If for some reason there is no longer any contact between the birth family and the adoptive family, the adopted child can feel rejected.
- Peer communications- The adopted child who has on-going interaction with his or her birth family can struggle with the need to explain the various relationships to his peers.
- Power struggles– The adopted child may try to manipulate the adoptive and the birth family by playing one against the other.
- Identify confusion– As the child matures, he or she might experience a greater struggle with identity from trying to make sense of family history and genealogy information involving more than one family.
Open Adoption Disadvantages | American Pregnancy Association