There is no way to tell the backstory to this without it being horribly outing, so I am going to jump straight to the question:
If you found out you have a half-sibling after the death of a parent you were nc with, would you want to meet your sibling?
Roughly same ages but going by SM, we have nothing in common, very different lives. I really do not see the point in wanting to meet them - AIBU?