The Wonder Soldier left the cabin with shaking hands and a red face. Jay could feel his anger and sadness, but he thought that it's best for Eugene to leave and never look back.
Also, Jay hoped that the blond man won't tell the USC about his brother's home. The two teenagers no longer had nothing to lose. They have a house with electricity and water, a toddler to care for, and each other.
Judging by the little information that Jay got from their interaction, Eugene had met his brother and JJ after they left their respective families, which led to the Wonder Soldier forming an "agreement" with the Red King. That "agreement" could be something along the lines of Eugene not ratting them out to the USC and the Red King not attacking the last Wonder Soldier.
The day was coming to an end, so the baby was given a shower before he's tucked into bed. Like usual, the toddler get to pick his bedtime story.