Be aloof. Be distant. Hell, completely ignore the girl of your dreams and go bat s**t crazy if you like, if it worked for The Narrator in Fight CLub with Marla there's no reason to think it can't work for you. Whilst responding to a text in a timely manner is appreciated don't let her think you're at her beck and call ALL the time. Straddle the line between being rudely uncommunicative and available 24/7 like a puppy dog. Go out, turn off your phone, have a night out with the boys, whatever it takes. You have to give her a chance to miss you before she can start to pine and if you've played your cards right, pine she will. Rubber gloves optional.