Hours after the arrest, Nick took to Twitter to offer support for his younger brother. The gesture was unappreciated by Aaron, who shared a statement through his rep after being released on bail, saying, "If my own blood (Nick) truly cared about my well-being, why wouldn’t he call me directly and have a conversation instead of making this about him through a very public forum?"
The "Sooner or Later" singer also expressed doubt that he and Nick will ever be able to find peace between them. "I think there's too much animosity," he explained. "There's too much conflict of interest."
However, that doesn't mean Aaron has closed himself off to the possibility of reconciliation. When asked what he would say to his brother if he could speak with him directly, Aaron said, "I will always love you. And I will always have forgiveness in my heart for you. And before you read tabloids and you make assumptions, you should reach out to me."
Aaron was arrested on charges of DUI refusal, possession of marijuana less than one ounce, and possession of drug related objects. His bail was set at $4,610, and he was released on bond around 2:30 p.m. on Sunday.
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"A broken man. Broken. Heartbroken," he said through tears. "Four days of no sleep. Guarding my girlfriend [Madison Parker] outside of a car, making sure she was safe. Driving all over the United States of America. Trying to get to my radio shows. Doing the best that I can. Trying to show up, so people don't give up on me again."
Among those he says have given up on him the most, Aaron said his brother and "a lot of my fans."
Aaron was joined by his girlfriend for a part of his sit-down with ET. Madison was a passenger in the vehicle on Saturday and was arrested alongside Aaron for obstruction of law enforcement officers, possession of marijuana less than once ounce, and possession of drug related objects.
According to Madison, both Nick and Angel, Aaron's twin sister, have been pushing for Aaron to undergo an intervention.
"They think that he's rotting and that he needs an intervention and he needs help and he's gonna die soon and all these horrible things that are not true," Madison said. "They [don't] care to call or even check into see how he's doing."
"They could call and say, 'Hey, we're worried about you. We love you. Can we see each other? Do you want to go grab lunch?' Simple things," she added.
ET has reached out to Nick's reps for comment.
In the days after his release from jail, Aaron went on a series of Twitter rants slamming speculation that he's addicted to illegal drugs and railing against critics he says are mocking his body.
The singer -- who has said in the past that his small frame is a result of a hiatal hernia that he was diagnosed with at age 19 and not drug abuse or addiction -- said that the speculation about his weight was "male body shaming."