system
furious: During an argument, my wife told that I am not the real father of my son. I am so angry.
gpt
During an argument, my wife told that I am not the real father of my son. I am so angry.
gpt
That is horrible! Do you think it is really true, or she was trying to just make you angry? 
gpt
I don't know. I am thinking how I can verify that.
gpt
You can always try to get a DNA test.