Justin Timberlake and Cameron Diaz are reportedly considering getting back together after an accidental meeting in October.

The couple dated for four years before splitting up in January. Shortly afterwards Justin was linked to Jessica Biel and they are said to have been dating since February - but the former NSYNC star is said to be considering finishing with her to reconcile with Cameron.

A source close to Cameron told Grazia magazine that the former couple bumped into each other while shopping in Los Angeles in October: “It was by total chance that they bumped into each other.”

“But, before they knew it, Cam and Justin were laughing, joking and reminiscing about the past.”

After a brief chat, the couple returned to their errands but Justin called his Shrek 3 co-star later that day: “They talked for hours, about anything and everything. Like a lot of women who meet up with an ex they still care about, Cameron did wonder what the call was about.”

“[But] after that they started calling and texting regularly.”

Needless to say Jessica is quite anxious about the turn of events. A source close to the I Now Pronounce You Chuck and Larry star added: “She has told friends she believes it was disrespectful of Justin to assume it would be okay for him to resume a friendship with an ex without taking into account her feelings.”

“No one could blame her for not wanting to feel like she’s being taken for granted.”