'Casper is a snake!' Jennifer Lopez urged by former friend of toyboy lover Smart to be wary of the back-up dancer

Jenny Lopez seems to have opened her heart completely to her boyfriend  Casper Smart, who the 42-year-old just promoted to head choreographer for her current tour.
But according to Casper's 'best friend,' back-up dancer Josh Ayers, J-Lo shouldn’t trust him as far as she can throw him.
'He's willing to do whatever Jennifer wants as long as it furthers his own career,' Ayers told In Touch Weekly.

Is it real? Casper Smart's friend alleged the dancer is 'using' J Lo to further his own career

Ayers was reportedly close to the 25-year-old dancer for years, and claims he has seen first hand how the heartthrob manipulates women to get what he wants.
Before Casper hooked up with the American Idol judge, he was with steady girlfriend Aisha Francis for two years.
According to Ayers, it was Aisha who helped land Casper a dance gig on Jennifer's music video, Dance Again - where the pair first met. 

Former friend: Josh Ayers said Casper Smart is a 'manipulator'

Casper 'just got lucky,' he said.
He added Aisha learned of Casper's deception when she turned on the TV one day last December and watched in shock as she learned that Casper had moved on with Jennifer.
'Aisha was really good to Casper,' said Ayers, who admits to a big fall out with his former friend a few months ago. 'He used her to get what he wanted.'

The ex: Dancer Aisha Francis helped get Casper the gig with J Lo - and then he allegedly dumped her

Smart, who has been reportedly showered with gifts by the mother-of-twins, said in an interview last month the relationship he has with Jen 'just spontaneously happened.' 
Jen nor Casper have commented about Ayers' accusations.
On June 18th, Aisha tweeted simply, 'taking it one day at a time.'

Gifts: Wealthy Jen has apparently been showering Casper - seen here May 20 in Los Angeles, with loads of new clothes