Is this a new marketing campaign for You're the Worst?
Cyrus, 22, was most recently linked to Victoria's Secret model Stella Maxwell, and before that, Patrick Schwarzenegger. She was also previously engaged to Liam Hemsworth. Cook previously dated Jessica Simpson.
Cyrus, who describes herself as pansexual, and Cook, 43, have been friends for a long time; however, in recent months, they've started "hooking up," in the parlance of Us Weekly. A source for Us provided no further information.
What do you think? Are Cyrus and Cook an item - and if so, is this a sign of the apocalypse?