At least you got to know your real father, and it would have satisfied your curiosity as to where your from. You must be disappointed that he is not who you hoped he would be. So the problem is him and not you.
I fell out with my real dad when I was 16. Then people persuaded me to talk to him again because he only went back out to work as I pushed him, unintentionally I may add. My mum never gave me a penny of the maintenance he paid and he was abhorred. My parents I stayed with were so very selfish. But anyway I fell unwell and all of a sudden he was the one who supposedly cut ties with me, but I did not care I was through.
My mum told everyone that he wouldn't talk to me because I now had "something wrong with me." This was not wholly accurate but people lapped it up.