"I'll tell you straight up, Charlie and I are going to get married," his girlfriend, known only as Star, told Rolling Stone Magazine in a recent interview.
"When that will be, we don't know. But I take it very seriously. Charlie is my husband."
However, Manson – who was sentenced to life behind bars for the 1969 murders of Sharon Tate, her unborn baby and guests – seemed less set on the union, dispelling the wedding talk as "garbage".
"You know that, man. That's trash. We're just playing that for public consumption," he said.
There is no denying though that the pair are close, with Star visiting Manson every Saturday and Sunday, up to five hours a day, since she was 19.
In 2007, she moved to Corcoran, California, where the 79-year-old has served 15 of his 44 years in prison, to be closer to her beau.
The loyal brunette – who bears a striking resemblance to Manson family member Susan Atkins – even shaved her head and carved an X into her head at Manson's request.
"People can think I'm crazy," she said.
"But they don't know. This is what's right for me. This is what I was born for."
According to the article, Star was first drawn to Manson through his environmental writing as a teenager.
Her deeply religious family feared she had lost her way after they caught her smoking marijuana and eating mushrooms, locking her in her room for much of her high school years.
