Hi!
Your story is so awful. :c I feel so sorry for you. A similar thing happened in my family.
My dad cheated on my mum, I have a half sister from that affair, and my mom is with a wonderful guy named Charlie!
I don't like my real dad very much, though.
I don't speak to him.
I'm glad you're happy that your dad is happy, though.
You're awesome, yo.
Author's response
So, our problems are similar, but opposite. Huh.