Cheer up, dude!

Justin Bieber tried to take a leisurely stroll through Beverly Hills with a friend last night, but he ended up bumping into a sea of paparazzi because he walked right by the Vanity Fair Oscars party. The Biebs wasn't very happy about getting his picture taken, but he didn't lose his temper like he has on previous occasions.

The VF soiree probably brings back painful memories for JB. Last time he attended, he was happily in love with Selena Gomez, and now she's happily in love with The Weeknd. The "Come & Get It" songstress is currently in Amsterdam with the "Starboy" crooner, and it doesn't seem to be sitting well with her Canadian pop star ex.

Maybe he was just crabby because he was up late partying at Floyd Mayweather's birthday the night before?