Fergie says her marriage to Josh Duhamel is stronger because of infidelity rumours.

The Black Eyed Peas singer - who wed the 'Life As We Know It' actor in 2009 - had to face ''difficult'' times when nine months into their marriage it was alleged he had cheated on her with a stripper, but she is adamant the unfounded claims actually made their relationship rock solid.

Speaking to Oprah Winfrey, Fergie said the incident had helped her re-evaluate her marriage, explaining: ''It was difficult. When you got through difficult times it really makes you stronger as unit, as a partnership. It does for us anyway. Our love today is a deeper love.''

The couple renewed their vows in 2010 and the 37-year-old singer insists their relationship is now stronger than ever because they understand the importance of communication. Fergie added: ''We're strong today because of anything difficult that's happened with us. We deal with it. We communicate. Communicating's the most important thing.''

Fergie has spoken about her desire to start a family with the handsome star in the near future and recently enthused: ''It's definitely something that we're interested in doing. We made no secret of that. We'll be very excited when it happens.''

The full 'Oprah's Next Chapter' interview airs on Sunday October 21 on OWN.