Katie Price and Peter Andre split over a sex ban imposed by the former glamour model, it's been claimed.

Katie, also known as Jordan, is reported to have banned intimacy between the couple during their preparations for the recent London marathon.

The mum of three was “constantly knackered” and wanted to conserve her energy before the race day, a friend told The Sun newspaper.

Peter asked Katie for a divorce on Monday after pictures in a newspaper showed the glamour model alongside another man.

The individual, who has been identified as a top international dressage rider, has denied he was behind the split – and revealed himself to be gay.

As previously reported on Entertainmentwise, Katie has reportedly been bombarding Peter with phone calls and text messages in an effort to get him to take her back.

But Peter, who is best known for his hit single Mysterious Girl, is refusing to talk about the status of their relationship.

Check out Entertainmentwise's look at Katie and Peter's relationship below:

Katie and Peter in happier times