Fitetoend,
A couple of observations. First, you mentioned that you have not talked to your partner about this. Second, which is an extension of the my first comment, you said that you have assumed what she is thinking. I must say, not talking to your partner then deciding what she is thinking doesn't sound very wise. Please note, I am only offering constructive criticism here. I am only interested in seeing that you can have as much pleasure as you would like while you are also pleasing your partner.
I remember the first woman who gave me oral; we were both 18. I came very quickly; she put her mouth on my head and it was all over in less than a second. I wasn't feeling too happy at that moment. I didn't know exactly what to say and she was smiling as big as I had ever seen her before. She just made her first guy come and she was ecstatic while I was unable to take pleasure in her joy because I was essentially feeling sorry for myself and my inadequacies. To make matters even worse, I thought I was well below average in the penis size department back then.
So, the next day she wanted to give head again. I was still feeling embarrassed from the night before, but I was determined to last longer, and I wasn't about to say "no" because it still felt very good. So, it happened again and I came within a second. I didn't see her for a few days, then we were sitting in bed watching a movie and she started to give me a hand job. While she was stroking I decided to talk about my mental limitations. I told her I thought I had a small penis and I wished it were bigger. She leaned up and looked at me, looked at my erect penis with cock in hand, and said "I can't imagine why you want it bigger." That was an ego boost and her reaction was genuine--she was also a virgin. Anyway, I told her that I should be able to last longer as well. And she just looked bewildered, after talking about it I discovered that she didn't really have any problem with me. She was really excited that she could get me erect and she could get me to come. She was very happy that I was responsive to her.
So, the main point here is that I thought she thought I was small and I thought she thought I should be lasting longer during a blowjob, when, in fact, she thought neither of those things.
I really encourage you to talk to your partner. You will earn "bonus points" for honesty, being genuine, and telling her that you wish to please her just as much, if not more, than she pleases you. Also, you will understand more about her thoughts, desires, and I believe this talk could improve a relationship that already sounds to be going very well.
