Justin Timberlake and Jessica Biel were seen together after the party of his new films premiere. The couple - who split in March after four years together - attended the Los Angeles premiere and onlookers say they were very affectionate towards each other, sparking more rumors they have rekindled their romance. An onlooker told People magazine: They became more and more affectionate, sneaking kisses, whispering to each other. At one point, she pretended to punch him a couple times and he gamely bounced up and down like a jack in the box. Despite breaking up in March, Justin and Jessica have been linked to each on several occasions in the past few months. In September, the couple were said to have enjoyed a romantic weekend at a friends wedding in Steamboat Springs, Colorado, and were by each others sides all night when they spotted at a bar in the town with a group of pals. ES In July, a friend revealed they had been seeing each for a few weeks as they had realized they still wanted to be together. They said: Theyve been quietly seeing each other again. They have been talking the whole time and decided to give it another shot. Jessica really wanted to get back together with him and Justin thought single life was not what its cracked up to be. ES