Gavin Rossdale and his former male lover, British pop singer Peter “Marilyn” Robinson.

In his 1995 autobiography Take It Like A Man, Boy George wrote that in the 1980s Rossdale had an affair with the British singer Peter Robinson, a.k.a. Marilyn. Initially Gavin and Marilyn denied the story. Then in 2009, Marilyn confirmed it to InTouch magazine and said they had been “together five years” in the 1980s. Marilyn also said, “Gavin and Gwen are perfect for each other, but he was the love of my life.” In 2010, Rossdale admitted to Details magazine that it had been an experimentation and “part of growing up”. 

In August 2015 after news of Gwen Stefani filing for divorce Marilyn said to Radar Online, “He called our relationship an experimentation, indiscretion of youth. Our experiment went on for five years! If you don’t live in your own truth, whatever it may be, how can you be happy? You’re not at peace with yourself.”