Got a secret, can you keep it? Apparently not if you're Troian Bellisario, who loved spoiling Pretty Little Liars. The TV star, who has portrayed Spencer Hastings for seven seasons on the Freeform series, admitted that she used to routinely dish out PLL details , even though everyone else on the show tried their hardest to keep tight-lipped about Rosewood's ever-twisting mystery . The reason she was cool with revealing so much? According to the actress, no one believed her!