Twentieth Century Studios/everett

Don’t threatenJosh Gadwith a good time.

He said, ‘Yeah, pop it on,’ and I played the opening number."

Gyllenhaal had no idea what he’d just agreed to hear.

LOVE AND OTHER DRUGS, from left: Josh Gad, Jake Gyllenhaal, 2010.

Josh Gad and Jake Gyllenhaal in ‘Love & Other Drugs’.Credit:Twentieth Century Studios/everett

“Jake laughed his ass off” when Gad played him the first song.

He stopped the car and said, ‘Dude, you cannot do whatever this is.

This will be way too controversial.

HOLLYWOOD - NOVEMBER 04: Actors Jake Gyllenhaal (L) and Josh Gad attend “Love & Other Drugs” Opening Night Gala after party durring AFI FEST 2010 presented by Audi at Hollywood Roosevelt Hotel on November 4, 2010 in Hollywood, California.

Jake Gyllenhaal and Josh Gad attend the ‘Love & Other Drugs’ 2010 premiere.Kevin Winter/Getty

Who the hell wrote this anyway?’

I paused the music and looked over at him.

‘TheSouth Parkguys.'"

Kevin Winter/Getty

Reps for Gyllenhaal did not respond toEntertainment Weekly’s request for comment.

TheBook’s book even won Parker, Stone, andRobert Lopeza Tony.