Peter Andre is furious after discovering Katie Price has been partying with her ex-boyfriend.
The singer's estranged wife invited married Dane Bowers to her mansion in Surrey, Southern England, after he bombarded her with "comforting" text messages in the wake of the pair's separation.
Katie and Dane - who famously starred in a homemade sex tape together - drank with a group of friends until the early hours of Tuesday morning (26.05.09).
Peter, 36, is said to have been further angered by the fact his children were asleep in the house during the party, and was also dismayed after 31-year-old Katie banned him from seeing her son Harvey on his seventh birthday yesterday (27.05.09).
A source told Britain's The Sun newspaper: "To say Peter is angry is an understatement. Quite why he is banned from seeing his children but it's all right for Kate to hold wild parties at the house is beyond him."
Peter had bought presents including a drum kit for Harvey - who is Katie's son from a previous relationship - and was upset when he couldn't give them to him at his party held at a popular UK theme park.