A.L.
Wow! I think right now you should really focus on the positive. You found each other! I have been trying for a while to find my half sisters (yes, even on myspace). My parents were never married (they were VERY young), my dad had two more girls with another woman (well, the woman he married) and he passed away when I was 16. I never met him so I really want to meet them. All I would say is never downplay his feelings what he has gone through is his reality, you know? Now you can work on building that sibling relationship.