Tina Turnerhas spoken movingly about thetragic suicide of her son, Craig Turner, in July.

Speaking to BBC News, the music icon — who previously described Craig’s death at the age of 59 as“My saddest moment as a mother”— revealed his passing was doubly shocking because he’d just fallen in love with a new girlfriend and started a new job.

“I still don’t know what took him to the edge,” Turner told the BBC, “because at that stage he had said to me that he had never met a woman that he felt that way about.”

“He was bringing her to meet me [for] his birthday in August. He had decorated his apartment, that I bought him years ago. He had gotten a new job with a prominent real estate company in California, [which] he was very happy with. I have no idea what pulled him down, except something that followed him with loneliness. I think it was something with being alone. But when I think that, why didn’t he call the new girlfriend that gave him the lift?”

Turner added to the BBC: “He was an introverted person, he was very shy, so I didn’t know either, except now when I listen back to our last conversations, I notice a change. The last few times we talked, the conversations were different, and I didn’t know that until after the suicide.”

Craig Turner/Facebook

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On July 3, a spokesperson for the Los Angeles County Department of Medical Examiner-Coroner confirmed to PEOPLE that Craig was found dead at his Studio City, California, home from a self-inflicted gunshot wound.

In her upcoming memoirMy Love Story, the diva details how her finding love with second husband Erwin Bach literally saved her life, with Bachdonating his own kidneyfor a life-saving kidney transplant procedure.

“I’m happier than I’ve ever been in my life. I’m happier than I ever thought that life would become for me,” said Turner to the BBC. “Most of my hardships came while I was young and growing up. And in the last days when normally people suffer from old age and sickness my happiness came. I’m really thoroughly happy.”

source: people.com