Mafia turncoat John Alite will reveal how he teamed with Burke to murder Bruce Gotterup in 1991. In earlier trial, Alite stunned court admitting to steamy affair with Victoria Gotti.

Three years after he testified against John A. (Junior) Gotti, the mob scion’s former best friend is returning to court with one last score to settle against the Gambino crime family.

Mafia turncoat John Alite will read a blistering statement at the sentencing Friday of John Burke, his co-conspirator in the 1991 gangland murder of Bruce Gotterup, the Daily News has learned.

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“They have always had a sense of forgiveness and I will be sticking up for them,” he said about the Gotterup family in an exclusive interview with The Daily News.

Alite didn’t take the stand at Burke’s murder trial last year, but he sparred with Gotti during the mob boss’ 2009 federal trial on charges that he approved the Gotterup killing. At one point, Junior called Alite a “punk dog” in the courtroom.

In an earlier trial of another Gambino mobster, Alite stunned the court by revealing he had a steamy affair with mob princess Victoria Gotti, Junior’s sister, in the 1980s when she was dating her future husband Carmine Agnello. She denied any relationship.

Prosecutors failed to prove Junior’s connection to the Gotterup slaying.

GOTTI'S DEFENSE PAINTS MOB TURNCOAT ALITE AS LYING, MURDERING NUT

Now, Alite is ready to deliver a knockout punch to his ex-crony on behalf of Gotterup’s family.

“He (Burke) was a coward then and he’s still a coward for not owning up to his crime and apologizing to the family.”

Alite said he will out Burke, who faces life in prison, as a fraud for portraying himself on an Internet blog as a Bible-quoting Christian who claims to have found religion in prison.

Alite has kept a low profile since he was released from prison last spring after completing a 100-month sentence for his part in Gotterup’s murder.

But he dodged a life sentence by helping the government prosecute Junior and other members of their murderous crew that pushed drugs in Queens in the 1980s and left a trail of dead bodies.

He couldn’t deliver a conviction against Junior, whose trial ended in a hung jury. But his testimony did result in guilty pleas by other crew members and the conviction of Gambino hitman Charles Carneglia.

In addition to their business partnership, Alite and Junior used to be fast friends.

Junior was Alite’s best man at his wedding, even convincing him to get hitched on Valentine’s Day because it was Junior’s birthday. And Alite attended his wedding at the Helmsley Palace Hotel, which was a who’s who of mobsters.

Because he was of Albanian descent and not Italian, Alite could never have been a made man. Still, prosecutors said he was endowed with a more powerful status than other mob associates because of his ties to Junior and his sheer ruthlessness.

Alite estimates he made millions of dollars, owned nine homes, six businesses and three nightclubs.

That’s all gone.

He said the priority now is keeping his 21-year-old son John Jr. on the straight and narrow and disrupting the mob’s recruiting pipeline of young men lured by false dreams of money and honor — like he was while growing up in Woodhaven, Queens.

“I ruined my life the way I went,” Alite said. “Before I went to jail I was a good father but I was like two different people. On the street I was vicious. My kids are never gonna go through what I did.

“I took my kids to a Yankees game and it humbled me because we sat in the bleachers and I used to sit in box seats,” he explained. “But that’s part of life now and I am trying to make it the right way this time.”

“I get up at 6:30 now looking for work, I get depressed, I go to therapy,” he said about working construction. “I’m trying to keep pushing forward.”

Alite said he met with Debra Gotterup, Bruce’s wife, and her daughter about a year ago and told them he was sorry he ruined their lives as well as his own.

Debra Gotterup, of Long Island, said said she believes he’s sincere.

As for Burke, she’s looking forward to seeing him sentenced to prison today in Brooklyn Federal Court.

“I can’t wait for Friday and I’ll never forgive him. He’s the one who pulled the trigger,” she said.

Alite’s scorn goes beyond Junior to his father, the Teflon Don.

He laughs at the mention of a major motion picture about the elder John Gotti that Junior backs — calling it a “Cinderella” fairy tale that takes liberties with the truth.

Alite, who spent several nights a week sleeping over the Gotti home in Howard Beach back in the day, said the Dapper Don couldn’t properly dress himself without the help of a tailor.

“That family is never going to take accountability for what they did,” he said. “They’re egotistical. They love themselves.”

Alite’s road ahead has cinematic themes — part “A Bronx Tale” trying to protect his sons from trouble and part “Carlito’s Way” staying clear of trouble himself.

Inevitably he runs into a familiar face from his illicit past. Sometimes they will say hello and tell him not to tell anyone they spoke to him. Others call him a rat or ignore him.

He’s also painfully aware of the ever-present danger of retribution faced by every mob rat.

“Every day I walk out the door I check out everything,” he said, noting that he balked at entering the witness protection program. “I’m not going to be one of those guys who gets killed in the street if I can help it, but I’m not gonna go live in Utah.

“I know there’s guys on the street who want me,” Alite said. “They’re patient. They want me to get comfortable. I know how easy it is to get somebody.”

jmarzulli@nydailynews.com

WHAT HE'LL TELL 'FAKE TOUGH GUY'

Excerpts from a statement former Gambino associate John Alite will read in federal court Friday during the sentencing of John Burke for the 1991 murder of Bruce Gotterup.

“I speak behind this podium because like the rest of the other fake tough guys and yourself, if we were somewhere alone in the past in a cell, in the streets, you wouldn't make a peep about me or anyone in a position that's really trying to live the right way for a change.”

“This family (Gotterup) doesn’t hate you, doesn’t even wish you harm. All they ever wanted was an apology. ... Instead of giving them closure and helping them get through their mourning and admit to your part in taking (Bruce Gotterup’s) life as I did, instead you give them disrespect and push the Bible while at the same time you move heroin in state joints (prison).”

“Why don’t you be a man and speak up to break this pattern not just for our kids’ sake but for as many kids’ as we can reach sakes?”

“You have plenty of time now to remember that I saved your life numerous times when you couldn't make the streets without me or my name. So the next time you decide to write on the computer, try talking to your God to guide you and stand on your own two feet, not like a coward, a junkie or a liar.”

“If you are really honest to that Bible that you claim, you will make amends with this family and finally apologize to them today!”