The chart-topping star makes a strong case for Livin’ on a Prayer and opts for TLC at karaoke. But which song reminds her too much of her ex to listen to?

“I already know the drill,” says Bebe Rexha, holding her ID in one hand and a pen in the other as she signs into Markt dispensary, a weed shop in L.A.’s Studio City neighborhood. Rexha tried the Runtz ...