Justin Timberlake, Jessica Biel "Really in Love" at Movie Bash

Entertainment October 21, 2011 AT 2:19PM By Justin Ravitz

Credit: Jeff Vespa/VF11/WireImage

Justin Timberlake wasn't wanting for beautiful women at Thursday's premiere of his action thriller In Time in L.A.-- where costars Amanda Seyfried and Olivia Wilde stunned on the red carpet. He and onetime fling Wilde, 26, even sat side-by-side during the screening, according to an onlooker.

PHOTOS: Justin and Jessica through the years

But after the screening, Timberlake headed to the afterparty at a private home in Beverly Hills, and partied with another stunner: on-again love Jessica Biel.

"Jess didn't show up until the after-party," the witness tells Us Weekly of the actress, 29. "They still look really in love, though...such a cute couple."

PHOTOS: Justin's many women

The duo quietly reunited over the summer after officially announcing their split after four tumultuous years together in March.

"They have been talking the whole time and decided to give it another shot," a pal close to the pair told Us in August. "Jessica really wanted to get back together with him and Justin realized single life is not what it's cracked up to be."

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Tell Us: Could Jessica and Justin stay together after all?

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October 21, 2011 - 8:47pm Kim Thomas
She is way better for him than Cameron diaz(GAG). I hope they make it they are oober cute together.
October 21, 2011 - 8:09pm Bambi Aletha Blue
This picture is from February, before they broke up, no?
October 21, 2011 - 5:01pm Tresa Smith
They make a great couple, and it seems he really cares about her. Hope they make out.
October 21, 2011 - 3:55pm Ali Kat Hilley
doubt it. just hormones talking.