Peter Andre has spoken of his pain at discovering how his son Junior has begun calling Katie Price's new boyfriend Alex Reid dad.

Reid made the revelation during a recent magazine interview, in which he also spoke of his admiration for Andre and Price's two children.

Writing in his weekly column for New! Magazine, Andre said: "Of course, I was hurt when I read this. What father wouldn't be?

"He says he feels bad about spending so much time with someone else's kids, but then proceeds to talk about them at length.

"Why would you do that if you felt bad?

Reid, a cage fighter, has been pictured frequently with Junior, 4, and Princess Tiaamii, 2, since he began dating Price in July.

He told OK! magazine last week that he had “totally fallen” for Price's kids.