Jennifer Lopez Ex Casper Smart Jealous Of Ryan Guzman Chemistry?- JLO Getting Close To 'The Boy Next Door' Costar?

Jennifer Lopez and Casper Smart might have broken up three months ago, but new reports are claiming that J.Lo's costar Ryan Guzman could have played a part in the couple's split. Lopez and Guzman met while on the set of the singer's new film The Boy Next Door and chemistry between the two was undeniable. The attraction between the two was so steamy that is caused a rift in Lopez and Smart's relationship.

According to RadarOnline, Casper would come visit the two on-set and would get so jealous that his girlfriend was with Guzman. "Casper would get very jealous and possessive of Jennifer while they were filming this movie because Ryan and her got extremely close," the source explained.

The tension between Jen and Casper got so bad that the crew had to ask him not to be on-set during filming. "It led to so many fights that the crew did not want him being on-set," a source tells Radar.

"Casper would come and watch Jennifer film love scenes with Ryan and it drove him crazy," the insider explained. "And for good reason... the chemistry between Jennifer and Ryan on and off screen is undeniable!"

However, it is unclear from the reports whether or not anything happened off-screen between Jennifer and Ryan, but reports close to the actor tell Radar that, "Ryan thinks that she is one of the sexiest women alive."

After breaking up with Smart in June, Lopez has had nothing but nice things to say about her ex, so it seems like they split on amicable terms, however these new rumors state otherwise.