Mind-blowing new allegations allege that former Paralympian Oscar Pistorious has been faking his emotions while in court as he faces charges that he murdered his girlfriend, Reeva Steenkamp.

Reeva Steenkamp PHOTOS

Jani Allan, a former columnist for the South African Sunday Times who now resides in New Jersey, posted an open letter to Pistorious on her blog, The Daily Maverick on April 15, where she made wild claims that he has taken acting lessons to help him seem like a grieving boyfriend during his court case.

"Oscar, you bought the gun. You chose the bullet that would cause maximum damage," Allan wrote. "I have it from a reliable source that you are taking acting lessons for your days in court. Your coach has an impossible task."

Allan went on to claim that Pistorius' testimony, which involved him crying and puking while trying to prove his innocence, was on par with an Academy Award winning performance.

"Oscar, you are the latest in a long line of faux heroes," she wrote. "Like so many, you have betrayed your people and disappointed your fans."

Allan is not the only person who has raised questions on the validity of Pistorious' testimony. Steenkamp's mother, June, also made comments about the former Paralympian's testimony last week.

"He has been very dramatic, the vomiting and crying. I think he's just about keeping himself together. I don't know whether he's acting," she said.

Pistorious claims he mistook girlfriend and model Reeva Steenkamp for a burglar when he shot through a closed bathroom door in his Pretoria, South Africa home on Valentine's Day 2013. Steenkamp did not survive the shooting.