Tourmates and decade-long friends Demi Lovato and Nick Jonas did a round of Carpool Karaoke with James Corden on Monday's Late Late Show, and Lovato and Corden had some fun with Jonas' dating history (Miley Cyrus, then Selena Gomez, then Cyrus again, then Gomez again).
Lovato and Jonas have clearly been friends for a long time, because she's hilariously comfortable making fun of him, and he just sits there and takes it.
