The beautiful duo started their night by walking the red carpet together at the actual awards ceremony in Los Angeles, looking insanely happy as they posed for pictures.
How cute is the way Jen's beaming at her man?!
Jen and Justin looked the perfect couple in their matching black (and matching smiles!) as they arrived at the glitzy ceremony on Sunday night (11 January).
Former Friends star Jen was nominated in the 'Best Actress – Drama' category for her role in Cake but lost out to Julianne Moore for Still Alice.
That didn't stop Jennifer and Justin going on to have a pretty fun night that included stopping by two official after-show parties.
First, they stopped by the InStyle and Warner Brothers post-party at the Beverly Hilton Hotel, where they cosied up once again on the red carpet and mingled with fellow guests including Channing Tatum, Eddie Redmayne and our very own Kelly Brook.
Then it was off to the HBO party at the same venue, where they chatted to the likes of Matthew McConaughey and his wife Camila Alves.
Justin stars in HBO series The Leftovers.
Just recently, gorgeous Jen said she and Justin never let rumours about their private life affect them anymore, stating: "I just don't pay attention… The main thing is to try to keep refocusing back on what you know is true and what makes you guys happy.
"We know what our truth is."
Judging by last night's loved up photos, this is one very happy couple!
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