Justin Timberlake has been working with current girlfriend Jessica Biel, claim reports.

"Justin's written and produced the best part of an entire album for Jessica," claims an insider according to AngryApe.

"He wants to get his own fans on side, so he's provided backing vocals on most of the tracks too," they continued.

Its been said that Timberlake convinced Biel to enter the studio and collaborate together.

This will be the couple’s first collaboration together musically.

(by Victoria Tsigonis)