Gushing over the sweet couple, a confidante revealed:
It was the best of times, it was the worst of times!
Nearby Beliebers took to Twitter with several pics of the mopey pop-star sitting alone with his face buried in his smartphone!
We enjoy a marathon session of Angry Birds as much as the next A-list celeb, but c'mon Justin!!
It's Oscars night!! Everyone is supposed to have fun!!!
Only last year the formerly adorbzies couple walked hand-in-hand at the very same VF party!! Oh, how the world turns!
She might as well have dedicated her In Memoriam ballad to their long lost love!!
Was Justin pissed his recently scorned Selenita mixed it up so marvelously on the Sunset Strip?!
Or does the brooding stem from the Gucci Mane cheating rumors?!?
See more pics of their contrasting evenings (below) and decide for yourself!!