Gwen Stefani and Gavin Rossdale on the rocks

OHMYGOSSIP — Gwen Stefani‘s marriage is on the rocks! The singer’s relationship with husband Gavin Rossdale is said to be suffering because Gwen doesn’t know enough about his past.

Gwen was left shocked when it was revealed Gavin had a daughter, Daisy Lowe, now 22, by his ex-girlfriend song-writer/designer Pearl Lowe; that he had a fling with 80s cross-dresser Peter Robinson — famously known as Marilyn; and that Courtney Love, 47, claimed on the Howard Stern show that she had an eight-month affair with Gavin while he was dating Gwen.

“Gwen often wonders what other secrets Gavin is hiding. It’s getting harder and harder for her to go through the motions with a man she sometimes feels like she doesn’t even know,” a source told America’s Star magazine.

“When they got together, it was Gavin who had the big career. But now that the tables have turned and Gwen is more famous than Gavin and that’s been a really hard journey for him.”