Peter Andre has compared Katie Price to a "wild animal that has been unleashed".
The 'Mysterious Girl' singer has lashed out at his estranged wife - also known as Jordan - who has been photographed cavorting with men while on holiday in Ibiza.
The 36-year-old star reportedly told a friend: "I don't recognise her as my wife. Has she no idea what this will be like for the kids?
"It was Katie who I fell in love with and married but it looks like she just wanted all along to be her old self, Jordan. I can't believe what I'm seeing. She's like a caged animal that's been let out."
Katie has been on the Spanish island shooting a new swimsuit calendar. In between her work commitments, the former glamour model has been partying with dozens of unnamed men, leaving Peter devastated.
Peter's friend told Britain's Daily Mirror newspaper: "Peter cannot believe what he's witnessing. He is really, genuinely shocked.
"He's been very upset, but this morning he said to me, 'I've shed my last tear for her'.
When he saw the photos of her partying in the papers, he said Kate is right about one thing... there were three of us in our marriage - me, Kate and Jordan."
Katie had previously claimed the pair's agent Claire Powell for interfering in their relationship.
Katie said: "There were three people in this marriage - me, Pete and Claire Powell."
Peter is staying at his holiday home in Cyprus with the couple's children Junior, four, and Princess Tiaamii, 23 months, and Katie's disabled son Harvey, seven, from a previous relationship.