Long after he had left the palace, his father, Zeus carefully looked at the attention caused by Ares disrespectful behavior. He had never thought that Ares will do such thing, he never taught him that but he somehow had taken control over his life.
At first, he was happy that he could think for himself not for his mother whom he kept his loyalty intact. Ares was the child in the Olympus who went hunting Zeus lovers just because Hera was angered.
Now, look at that kid... He had thrown everything just because of a single mortal...
"This is all your fault," thought he never imagined him loving a mortal, he himself never thought that there will be a day when he and Hera ends up messing the word called 'marriage'.
There relationship was toxic enough to cause chaos amongst those who were around them. This relationship that only lasted because none dare to split up keeps hundreds and thousands of old.