By Abigail O’Leary A scorned lover Googled ‘how to kill you ex’s finacè?’ and took shooting lessons before gunning down a 37-year-old mann. Jesse Alvarez, 33, was thrown into a state of jealous rage when he learned his ex girlfriend, Amy Gembara, who he dated on and off between 2015 and 2019, was engaged to her new partner, Mario Fierro. Alvarez, from San Diego, went on to research ways to kill Mario – Googling phrases such as ‘how to kill ex’s fiancè’ and ‘in California can you shoot someone trying to rob you?’. Alvarez, found guilty of first-degree murder, then went on to stalk Fierro’s Nort…
