Jessica Biel has opened up about whether she and fiancé Justin Timberlake get jealous of one another's on screen love interests.

She says: "You become quite intimate with your co-stars at times, but it's such a professional thing.

"There are like 50 people there, some eating, others reading the paper, it really isn't how you would think, there is no jealousy or envy."

Jessica Biel got engaged to Justin Timberlake in December 2011, and there are rumours the couple are planning to tie the knot this weekend.