^^^ really good advice, I would have to say that the trouble isnt JUST you lasting when she gets to the point of orgasm, sex can be a really easy thing BUT the most fulfilling sex is complicated, The footstool for great and orgasmic sex is communication, perhaps either you or her should be a little more vocal (I can only assume so much) mayeb JUST penetration isnt the answer, mayeb you can get her off during foreplay? just keep exploring I am sure you will find the correct answer, also try not to place too much importance on her orgasm she might end up feeling pressured, and just enjoy
