Rumors have been circulating that Jennifer Lopez allegedly wants to have a baby with boyfriend Casper Smart and has "turned to in vitro fertilization in hopes of getting pregnant," Star magazine reported.

Representatives for the former American Idol judge have reportedly said the rumors were not credible.

Lopez, 43, and former backup dancer Smart, 25, have been involved for 18 months.

The star was apparently hoping to keep the treatments under wraps, a source told the tabloid.

"She's paranoid about people knowing about her pregnancy hardships, because it makes her feel old," the source explained.

The National Enquirer reported on May 30 that Lopez had been cheating on the former backup dancer with her longtime friend and musical collaborator Pitbull.

Smart allegedly accused Lopez of cheating on him and according to The National Inquirer she did not deny the claim. However, Lopez and Smart were seen together last week spending time in London.

Lopez and Pitbull have worked together creatively on several projects since 2009. Their most recent collaboration was the hit track Live It Up.

View the Live It Up video below.

Lopez is estranged from her husband, singer Marc Anthony, 44, are set to be divorced. The former couple had twins age 5-years old.

The two married in 2004 and announced their separation in June 2011. Anthony filed for divorce in April 2012.

Lopez spoke to Entertainment Tonight on May 14 in Fort Lauderdale, FL., on the set for the video for Live It Up and the performer said that she will likely marry again.

View a video of the interview with Entertainment Tonight here.