"Me and Aaron don't really have that much of a relationship," Jordan, 27, acknowledged to this season's bachelorette, JoJo Fletcher. "It's just kind of the way he's chosen to do life, and I chose to stay close with my family and my parents and my brother."
Multiple sources tell ET that Aaron, 32, has actually been estranged from his entire family for years.
"The entire situation is painful for the family," a source close to the Rodgers tells ET.
Aaron's girlfriend, actress Olivia Munn, also alluded to the strained relationship between Jordan and the Green Bay Packers quarterback when ET chatted with her in May while she was promoting X-Men: Apocalypse.
"Aaron doesn't really ... I don't think he's really talked with his brother," Olivia told ET when asked about Jordan appearing on this season's The Bachelorette. "So, I actually don't know. It's complicated -- I'll say that."
Tellingly, Jordan's Instagram doesn't have any photos of Aaron, though there are plenty of photos with his and Aaron's older brother, Luke, and their parents, Ed and Darla. The foursome appear happy together, celebrating family events like birthdays and going on joint vacations. The football champ is also noticeably absent from both Jordan and Luke's header photos on Twitter, which both feature a silly snap of the entire family sans Aaron.
... And it appears Aaron wasn't at the family's Christmas celebration last year.
So far, Aaron has kept quiet about his relationship with his family, though his silence has also been noteworthy. The elite quarterback didn't give a shout-out to either of his parents on Mother's Day or Father's Day on social media, though both of his brothers did.
However, the family dynamic wasn't always this way. The last time Aaron and Jordan were photographed together in public was in April 2014 in Las Vegas, when they attended the 13th annual Michael Jordan Celebrity Invitational gala.
In 2012, Luke talked about his and Aaron's "competitive" relationship growing up.
"Me and Jordan never really fought, but Aaron and I got after it," Luke admitted in an interview with NBC, explaining that he and Aaron were much closer in age as opposed to Jordan and him. "We were always competing. My brother is probably one of the most competitive people I know other than myself. We just all kind of have this competitive streak."
In 2011 -- the year the Green Bay Packers won the Super Bowl -- Aaron and Jordan goofed off with each other in a video of the two working out together in their hometown of Chico, California.
Aaron's parents also proudly gushed about their pro athlete son in a local news report prior to the Super Bowl, with Darla joking about her son's much talked-about dating life.
"Every interview they ask, 'Is he dating a swimsuit model, or the country western singer, or the news analyst?' And the answer is 'No!'" Darla laughed. "Because early in his NFL career, I'd see something and I'd call him, like, 'Well, you didn't tell me,' and he'd be like, 'Mom, don't believe any of that stuff. It's just not true.'"
Jordan and Aaron's relationship got even more complicated in May, when Jordan was accused of cheating and wanting fame by trainer Brittany Farrar -- who's also very close friends with Olivia. Brittany claims to be Jordan's ex-girlfriend, and slammed him in an Instagram post.
"Riding the bench doesn't get in the way of a relationship, but cheating does. #yourpitchisntperfect @jrodgers11 #alwayswantedtobefamous #dreamscometrue #tuneinnextweekformoreBS," Brittany wrote.