Bobby Brown is opening up about the deep pain of losing his children Bobbi Kristina and Bobby Jr.

"I've cried, but not how I want to. I really want to just scream to the top of my lungs and cry, but it's just not there," Brown told People in an exclusive interview ahead of the release of his A&E documentary series, "Biography: Bobby Brown," which will premiere on May 30.

The 53-year-old singer and songwriter, who battled addiction in the past, is now reportedly sober and on therapy. He said his family had helped him get through his many struggles, including the pain of losing children to drugs.

Bobbi Kristina, his daughter with ex-wife Whitney Houston, died of drug intoxication. She was found unresponsive in a bathtub in 2015.  Her mother also drowned in a bathtub in 2012. Heart disease and cocaine use were identified as the contributing factors to her death.

Bobby Jr., his son with ex-partner Kim Ward, died from an overdose of alcohol, cocaine and fentanyl in November 2020.

Brown told the outlet that Bobbi Kristina and Bobby Jr. – who were born only four months apart, "were both musicians and loved to sing."

"Their relationship was tight. They'd get into their little tiffs but they were thick as thieves," he added. "No family, no father should have to go through this." 

The two-part documentary series chronicles Brown's rise to stardom and his struggles with addiction and the deaths of his children. "Biography: Bobby Brown" also features interviews with the R&B star's family members and friends, including Usher, Jermaine Dupri, Keith Sweat, Babyface, New Edition's Ricky Bell, Michael Bivins, Ronnie DeVoe and Johnny Gill. 

Brown said he often dreams about his late children.

"I always see them at beaches or in fields. They're running away, but they're laughing. And they're always together. I didn't have many dreams about Bobbi Kris before Bobby Jr. died. But then all of a sudden — floods of dreams," he said.

Brown spoke about the horrors of illegal substances in an episode of "Red Table Talk" last year. "It's my duty to remind people that it can kill you," he said.

Landon Brown, Bobby Brown Jr. and Bobby Brown From left: Landon Brown, Bobby Brown Jr. and Bobby Brown attend the premiere screening of "The Bobby Brown Story" on Aug. 29, 2018 in Hollywood, California. Photo: Jesse Grant/Getty Images