forget to tell her goodnight after you have made her cry, she probably cried in her dark bedroom all alone while she held her childhood teddy bear close to her chest
tell her that it's all in her head and that she is overreacting when she is starting to break down and tell her to stop when she starts having problems getting air into her lungs
tell her you'll call her, but instead go out and party all night and make out with random strangers who you find attractive in your drunken haze