no he should be sorry for feeling a little girl
I feel sorry for his victim, for his ex-partner and for his child. However I certainly don't feel sorry for Johnson.
He did it with absolute knowledge of her age and the law. He is a sexual deviant and he needs to be punished.
He knew her age from the start. Granted, she looks closer to 15 dog years but let's not pretend he didn't know exactly what she was - a school girl in year 10, not someone he met in a club and later found out was underage.
He knew what he was doing was illegal, but he did it anyway.
It also wasn't in any way a relationship of equals.