Your girlfriend finally decided, and wanted you to become Arachnid-Girl, the spider related superheroine that you both enjoy reading comics about from time to time. Arachnid-Girl told the story about how a teenage girl named Phoebe Parker got bitten by a radioactive spider, giving her the ability to climb walls like a spider.
Not only did Phoebe have red-hair like Justice-Girl, but she also had a blue, and black no leg sleeveless leotard, matching gloves that came equipped with webshooters underneath, and matching boots to hang onto buildings. Basically your girlfriend liked Arachnid-Girl so much, because she had the most villains, that turned out to be people that she grew up with, and people she spent half of her like her friend's billionaire mother. Deciding this, your girlfriend made her wish, and you began to feel tingly.