Season 3, Episode 12: "The Lady Killer"
What’s that rule in horror movies? Don’t lose your virginity or you’ll get killed? Well, the writers of PLL put their own twist on the rule after Spence and Toby took their relationship to the next level on Season 3A’s summer finale. Shortly after the couple sleep together for the first time, it is revealed to the audience that Toby is on the “A” team.