Katie Price admits she can be the ''most devious person in the world'', but insists she has no interest in exacting revenge on husband Kieran Hayler.

The couple decided to give their marriage another go after it emerged that Kieran had cheated on Katie with two women - Katie's best friend Jane Pountney and pal Chrissy Thomas - but TV star is adamant she's dealing with the drama in a mature fashion.

Katie, 36, explained: ''I can be the most devious person in the world but I'm not interested in revenge. Two wrongs do not make a right.

''There's always the threat of a lie detector but Kieran's not worried because he has nothing to lie about. I don't want to build up the trust and have a strong marriage.''

However, Katie says that although she's determined to make their marriage a success, she will not give Kieran - with whom she has two children, 12-month-old son Jett and an as-yet unnamed baby daughter - another chance if he slips up again.

But she has been impressed by the progress he's made with his sex addiction in therapy.

Katie said: ''Some people say it would've been easier to walk away but I wanted to stay and make a go of it.

''I'll never forget what he did and this is his last chance - if he did anything else, I'd be off - but Kieran's changed so much. He's continuing with his therapy and is happy.''

However, Katie is going to document the affairs and what she went through in a new autobiography.