Katy Perry and John Mayer get cozy, hang with pal Rihanna in NYC
On-again couple Katy Perry and John Mayer were heating up the Big Apple on Monday night.
In town to promote her upcoming album "Prism," Perry joined her beau and a group of pals, including BFF Rihanna, for drinks and dinner at The Lion in the West Village.
"She and John were affectionate," a spy-witness dished. "John [kept] Katy close with his arm around her while they stood at the bar."
After grabbing some beverages at the bar, the pair -- who duet on the new tune "Who You Love" -- headed upstairs to The Lion's private room for their meal.
More than halfway through dinner, RiRi joined the 15-person party, causing a "flurry of flashes" from the photogs outside. Once Rihanna got upstairs, she "sat next to John and Katy to catch up."