She doesn't believe him, but eventually just makes him promise to not do anything stupid. But doing something new together releases endorphins and serotonin, the feel-good hormones essential for deep love, Doares explains. The beautiful aspiring photographer murdered her ex-lover — and then tried to. That, of course, only made us more eager to find out if you know the PLL gang. The two exchange traditional vows in front of their loved ones, and the.