My dad hasn't had contact with his birth dad in over 25 years. I've heard several stories as to what happened but they're all completely different- we also had no contact with any of my dads dad side of the family. Around 18 months ago something came out about my dad in a very public way and I've been NC with my parents since this all came out. It still occasionally pops up on fb or in the local news and what my did attracted alot of attention, I also got some abuse from it which was hard to handle.
About 6 months ago dads birth dad got in touch just saying he'd heard about the situation etc. We've exchanged a few messages and he now lives a few towns over from where I live. He's suggested meeting up and trying to build a relationship but AIBU by doing so? The story he's told me as to why him and dad are NC seems pretty solid and my gran (dads mum) support his version of events (dads mum and dad are separated)