She knows what she is talking about. From a mans point of view just go with the flow and make sure you are ready to go a least another round, and you will last longer the second time around. I used to go pretty quick when I was younger but as time goes on you learn to last longer. Now I manage to get my wife off two time before I go. Practice makes perfect...Its not a competion and if she cares about you she wont judge you for it!