"I heard somebody yell, 'Rewind!'" J. Lo said, remembering an audience member's reaction at a screening of the movie. "That's great. It didn't do anything to me. It was another day at the office. Honestly, those scenes are super uncomfortable."
The 45-year-old "Booty" singer stars in the thriller as Clair Peterson, a bored, divorced housewife that gets into a sexual tryst with her teenage neighbor Noah, played by Step Up All In star Ryan Guzman, 27.
While shooting the scene may have been just "another day" for J. Lo, Ryan saw it as a challenge.
"I'm going to break some records today!" Ryan thought to himself before shooting.
In real life, J. Lo has dated younger men before. She is 18 years older than her ex Casper Smart, who is also 27. The couple called it quits in 2014, but there have been rumors that they may be giving their relationship another shot.
There may be yet another suitor for J. Lo, as rapper Pitbull is rumored to have a crush on the singer.
The Boy Next Door opens Jan. 23.