<human>: I found out that my dad has been cheating on my mom for over 3 years and he only came out and told my family because he accidentally had a son with the other woman. After he told us (me, sister, and mom), my parents got divorced but he is currently still seeing the mistress and thinks that he has done nothing wrong. He wants me to meet the kid and woman because it would "make me happy and don't you want to see your dad happy?" I told him I couldn't do that and he is pretty much choosing them over me and my sister. Am I wrong or is what he did completely fucked? I also have no idea what to do about this kid, he is blood related but I can't see myself ever being able to meet him.

Can you provide a brief rundown of the text in within 3 sentences?
<bot>: My dad cheated on my mom, had a kid, is still with that woman and thinks that he did nothing wrong.