WhatIs_87 wrote: I sent a text to my dads real number a few weeks ago, and it was marked as read.
That was a few weeks ago and just more evidence that he doesn't want a relationship with you.
What will it take for you to find "clarity"? It seems like no amount of evidence is sufficient. You explain everything away. So tell me, what will it take?
Im unaware what a private detective could do outside of verifying his info action or address.
A 3rd party, including a private detective, could approach your father and deliver a message. He could ask your dad to give him an answer for you. Then you would have a reply from someone not your sister, not your father, and independent 3rd party.
But I'm guessing even that would not satisfy you.