My question to you is, does she really reach a climax in ten minutes or is she faking it? If you’re both completely satisfied, then it’s not a problem how long you last. But the fact that you have a feeling that she wants more indicates to me that you’re not so confident that she’s having orgasms, and frankly, neither am I. What you need to do is sit down and have an honest talk with her. Figure out exactly what is going on, and then you can work on solving any problems that you discover. Premature ejaculation is a learning disorder. You can learn how to keep from ejaculating earlier than you want to, and it will be easier if you can work together, but if you’re not communicating about your sexual needs, then that is not going to happen. So have an honest heart-to-her talk and find out what’s really going on.