Looks like those American Idol girls are making a run at helping to destroy every marriage possible, because American Idol" finalist Elise Testone is being accused of breaking up a  6-year marriage of an 'Idol' guitarist. According to TMZ, Elise met Errol Cooney during Season 11 of 'Idol' -- when she made it to the top 6, and he played guitar for the band. Both Elise and Errol were on Idol's summer tour.  Last week his wife filed for divorce  citing "irreconcilable differences" -- but a rep for Erin tells TMZ the real reason for the breakup is an alleged affair between Errol and Elise.  The rep claims after being confronted by his wife he confessed to everything.  Elise is denying she had anything to do with their divorce.