If Zac Efron is back with Vanessa Hudgens, she's not going to like this ...
Efron was spotted at an L.A. bar yesterday, where he was surrounded by 5 young, pretty women -- none of whom was his reportedly on-again girlfriend.
The group was photographed sitting together at a table inside The Village Idiot bar, where it appeared they were drinking beer and doing shots.
Though Zac and Vanessa split in December, the two rekindled their romance earlier this month at L.A.'s Eden nightclub -- and Efron has been seen leaving Vanessa's house since.
Check out the pics above!