Pete Doherty lost his childhood teddy bear after Kate Moss set fire to him.
The Libertines rocker and the supermodel broke up in 2007 after two years together, and he was devastated when she "burned" him to cause him "emotional damage" following their split.
He told the Mail on Sunday newspaper's Event magazine: "It's a big, genuine and totally heartfelt regret that I didn't keep my eye on Pandy, who was my first-ever teddy bear. My sister gave him to me as a huge gesture of love and kinship.
"I held onto Pandy all my life but he ended up getting burned by Kate, along with a lot of other stuff, when we split up. There was no need for that unless she simply wanted to cause me as much emotional damage as possible."
Pete also revealed how an emotional letter from three former prisoners of war "hit" him hard after they blasted him for his behaviour. He admitted: "I once received a letter signed by three soldiers who had been prisoners of war in Japan.
"They said it made them sick that they suffered so much so that this country could be free and then people like me behaved like I do. It said I've let them down and that hit me hard."