By Jeremiah Hassel In late 2020, Monica White met Anthony Robinson on the dating app Tagged. Little did she know that Robinson was leading a double life and was allegedly a notorious serial killer terrorising the D.C. metro area. Now, around three years later, White said she feels lucky to be alive and that she’s thankful she saw some of the red flags that led her to break up with Robinson, who was dubbed the “Shopping Cart Killer” because he would allegedly drop the bodies of the women he had killed near shopping carts. Speaking to PEOPLE, White, 56, said: “I knew something was wrong with him…