We fell out three years ago. He left my mum, had a baby with another woman, we both tried to maintain a relationship but it was hard when he treated my younger sisters really badly (my youngest sister being 12 at the time, and my dad just couldn't understand why she was upset by the situation). He doesnt see where he goes wrong or own his mistakes, which is very frustrating. But I miss him, he's not getting any younger, and I would hate if something happened to either of us on bad terms. He's also gained two more grandchildren since we last spoke. Problem is, he's blocked me on Facebook. Part of me thinks he doesn't want a relationship, and I would have to message him through my partners profile. All I would write is something like 'hi dad, just want you to know I love and miss you.' But if he's blocked me, is it worth the possible rejection? Baring in mind we fell out because I finally spoke my mind and he didn't like it. I have a little half sister too who likely doesn't even know I exist, and it breaks my heart whenever my eldest asks where my dad is.