Justine Beiber n Selena Gomez Back Together?

Justin Bieber and Selena Gomez were at it again, and this time there were
unintended beneficiaries ... some random people at a hotel bar who got to hear Justin serenade Selena for free.
The Biebs plopped his butt on a piano stool at the Montage hotel bar in Bev Hills Friday night and sang "My Girl" to his on-again-off-again-on-again-off-again-on-again-off-again GF.
they strolled through the empty streets of Beverly Hills.
It's the first time they've been seen together in more than a year.tmz