With the news that Britney Spears 'has split' from her husband Sam Asghari, just 14 months after they married, fans are scratching their heads about where things could have gone so wrong.The pair reportedly had a 'nuclear argument' after Sam, 29, confronted his wife, 41, over rumours that she had cheated on him, the US website TMZ reported on Wednesday, 16 August. Sources told TMZ that Iranian-American model and actor Sam has moved out of their house and is now living in a place of his own, with one source saying: "It's only a matter of time before Sam files for divorce." It is not known whether the rumours are true, and OK! approached representatives for Britney and Sam for comment.