Katie Price's marriage has been hit by more cheating claims.

Katie, 39, was left devastated last year after she discovered that her husband Kieran Hayler had been cheating on her with their children's nanny, Nikki Brown, following a previous affair with Katie's best friend Jane Poutney and she vowed to leave him.

However, they were recently spotted partying together, leading to rumours of a reconciliation but there is reportedly no hope for their marriage after it was claimed that Kieran has been messaging a woman from Katie's pony club.

A source told the Sunday Mirror: ''Katie's school was the one thing she was most invested in. She absolutely loves it but it has been ruined now.

''When she found out Kieran was messaging one of the girls from the club she was absolutely destroyed. This has ruined their relationship.

''While they are civil to each other, Katie doesn't want to get back with Kieran.

''This incident with the girl from her Pony Club is just another reminder of that.''

Katie and Kieran have two children together, Jett Riviera, three, and Bunny, two. She also has three other children, Harvey, 14, with former soccer player Dwight Yorke and Junior, 11, and Princess, nine, with her ex-husband Peter Andre.

The star recently insisted she will remain close to Kieran for the sake of their kids.

She said: ''The thing is everyone knows what he's done. He knows what he's done. He's got mental health problems and he's going to therapy. I gave him a chance before so do people really think I'm going to go there again?

''He'll always be in my life just like Pete [Andre] will always be in my life - I've got kids with them. Do people need to see a removal lorry leaving my house? People can say what they like, I know what's going on. He's a cheat, and I'm not putting up with it. That's it.

''If you could put up with someone cheating again then that's up to you, but I can't and I'm not. He needs to sort his own problems out. I've got enough to deal with at the minute. He's done it again, he's lost my trust. It's down to him now what he does with the rest of his life.''