Charles Manson and Afton Elaine Burton may get married next month, the 26-year-old fiancée of the octogenarian convicted for mass murder, told The Associated Press (AP). Manson, who is serving a life sentence for his role in the murders of seven people and one unborn child in 1969, was granted a Kings County marriage license.

Although a confirmed date for the couple’s nuptials has not yet been revealed, a wedding coordinator told AP that they have only until early February before their marriage license expires, following which they would have to reapply. 

"Y'all can know that it's true," Burton told AP said. "It's going to happen." 

Burton reportedly said that she wanted to marry Manson to glean more information from him that could help secure his release. 

"I love him," she reportedly said. "I'm with him. There's all kinds of things."

Manson, who has been denied parole nearly 16 times and is not eligible to make another request for another 13 years, is not allowed family visits. He was convicted of killing seven people, including actress Sharon Tate, the wife of director Roman Polanski.

Tate’s sister, Debra, reportedly called the upcoming marriage as “ludicrous.”

"I think it's insane," Debra, who is a spokesperson for the families of Manson’s victims, told AP. "What would any young woman in her right mind want with an 80-year-old man?"

Burton had revealed her plans to marry Manson during a 2013 interview with Rolling Stone magazine. But, according to AP, Manson was not certain about the wedding. However, Burton, who is nicknamed "Star," reportedly denied speculation on Monday about Manson's reluctance, saying that they were waiting for the prison to complete the paperwork.

The wedding must happen on a visiting day and there can only be up to 10 guests from outside the prison, Jeffrey Callison, a spokesman with the California Department of Corrections and Rehabilitation said, according to CNN. The prisoner can also reportedly invite an officiant from outside the prison to carry out the nuptials.

Burton reportedly said that she and Manson would have been married by now had the 80-year-old not fallen afoul of prison rules. A spokesperson for the Department of Corrections told AP that Manson was charged with three violations in February, including threatening prison staff and possession of a weapon.