The Spanish fiancée of Chelsea footballer Frank Lampard has called time on their seven-year relationship.
Elen Rives, who has two children with the England midfielder, is understood to have reached her decision while on holiday in Florida last month.
Friends of Lampard have put the split down to the trauma brought on by the death of his mother Pat in April.
But the seeds of the break-up appear to have been sown when Miss Rives, 30, twice endured allegations of his infidelity.
Friends of the model said she has never forgiven him for his alleged fling with an eastern European brunette during a boysonly jaunt to Las Vegas two years ago.
Lampard, 30, was pictured with the woman by a tabloid newspaper and is said to have spent four hours with her in a villa.
`Elen felt humiliated by the whole episode,` said a friend.
`Frank has also never given her an adequate explanation for what he was doing, so it has simply festered.
`He has also not followed through on his promise to make her his wife - but it is the Las Vegas trip which has done all the real damage.`
Lampard had been accused of playing away before.
In 2006 a woman claimed she had sex with him at a hotel in Barcelona - Miss Rives`s home city.
The footballer, meanwhile, is said to have been enraged to discover in a Sunday newspaper that his fiancée had been married before.
A friend of Lampard said: `There was Elen going on to Frank about the importance of being honest with one another when she had been married and never told him.`
Lampard was also unhappy at his fiancée`s antics during the World Cup in Germany, when she was a ringleader among England `WAGs` on raucous nights out.
His friend said: `Frank was very embarrassed and annoyed. He had a £5million contract with Tesco at the time which he thought he might lose because of the
damage Elen was doing his image.`
Last night a source close to the former air hostess said: `Elen told Frank two weeks ago that neither of them could go on living a lie - that the relationship was over.`
Miss Rives has seen a solicitor about the split from Lampard, who is worth an estimated £25million and is thought to be paid £120,000 a week.
The friend added: `She has been told that although they never married she can expect around £10million.`
But Ayesha Vardag, a lawyer specialising in high-value divorce cases, said that while she did not know the details, that sounded `awfully high`.
Lampard and Miss Rives spent much of yesterday at their £3million Chelsea home, where she is staying until she finds somewhere else.
Leaving to take his daughters Luna, two, and one-year-old Isla for a short drive, Lampard refused to comment, merely saying: `We will not be making a formal announcement. Please leave us alone.`
Miss Rives left later in a taxi. She said: `I can`t comment on anything I`m afraid. I am sorry.`