Say: “it’s not you, it’s me. I’m sorry. I was walking at Walmart, this guy with tight skinny jeans walked by me. And something inside me said ‘I like that!’ I’m gay”.
Make up a whole sob story starting with we need to talk, about how you cheated on her with her brother, and if she doesn’t have one say sister, or if she doesn’t have any siblings just say a random person that you both know