Stop masturbating and looking at porn. Condition yourself to associate sexual pleasure solely with women.
Start working out. Being healthier helps and if you feel like a beast you'll fuck like one too.
Try to get your hands on some cialis or Viagra. Use it as a performance enhancer to get rid of your anxiety. Fuck her brains out, and once you know you have it in you to do so you'll be more confident in the future.
Good luck, start fucking her right before she finds someone else who will |