Jessica Biel, Justin Timberlake

Courtesy of Jeff Vespa/

It's about time!

After months of bike rides and brunch dates, on-again twosome Justin Timberlake and Jessica Biel finally stepped out together in Hollywood last night.

Although J.T. did the carpet solo at the In Time premiere, Jess was right by his side for the afterparty.

And this couple couldn't hide their affection!

RELATED: J.T. and Jess go bike riding

"[They] became more and more affectionate, sneaking kisses, whispering to each other, and sharing quick back rubs and caresses," People reports.

So they were kissing and canoodling in front of costars like Olivia Wilde and Amanda Seyfried...This duo is clearly hot and heavy.

But they weren't attached at the hip the whole night. Jess went to grab tacos from a food truck while Justin chatted with guests.

The couple stayed much longer than most of the other attendees and didn't leave until after midnight. Do you think they'll make it forever this time around?

PHOTOS: Hollywood Party Pics

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