Justin Bieber partied with Miley Cyrus at in L.A. all weekend and sources tell TMZ the two left the joint together around 2 AM & they were flirting.. HARDCORE! TMZ claims, “We’re told Miley arrived first (she’s a regular at the place) … with Justin showing up around 1:50 AM and heading straight for Miley’s table.” The two hung out for 15 minutes they’re seen laughing and flirting together … and they both left the spot at the same time, just after 2 AM. No one knows what they did after the show. Plus he was seen leaving her home late.. interesting! See the photos of them below!