Tay, Britney and Ariana are having a season of “I don't believe in Love!”, I think its seasonal and an expression of Wintery depression when serotonin is low, when serotonin is low, empathy is low or non existant, has been confirmed by AI in a Page yesterday. I think they will snap out of it by summer in Northern Hemisphere, when the sunny days promote Dopamine secretion and their serotonin is at optimum level and they are enjoying fame again, not suffering its constant over-loving and over-connection by obsessive fans.