He's certainly enjoying the nightlife!

Justin Bieber's sure enjoying the bachelor phase of life post-Selena Gomez (again!) as he attended a Project LA event last night in Hollywood followed by a bit of clubbing before bringing back a bunch of girls to his place for the after party. Is this another jealousy ploy?

The 20-year-old singer didn't necessarily bring them back per se as they arrived at his condo in Beverly Hills well before he showed up in his black Cadillac Escalade to kick things off.

Some would say this is another attempt to fill the void that his ex left with his antics but others believe that he's secretly trying to win her back despite his display of bravado.

This probably won't help his efforts!