Just FYI - I felt my gal could do better with oral sex. She has graduated from just sucking me a little before sex to staying longer and at times letting me cum in her mouth. As she explained it, it's not for the feel of me coming in her mouth as it is the knowledge of knowing it is the most intense feeling for me. I have felt that way about giving her the same favor - her enjoyment is my turn-on. I still felt like we could improve - so I bought her a book on the subject written by a women "The Ultimate Guide to Fellatio" by Violet Blue. It not only inspired her and turned her on, but it gave her new ideas that I have enjoyed very much. I think that you also need to bridge your gaps in a relationship - that is, talk about what you like and WHY. Don't expect just because you like it she'll do it. You have to also be willing to give in to her desires and respect her wishes.... I thought a 3 way with another women would be a great idea - but she was turned off by the suggestion. So I don't press the issue and respect that if she changes her mind, she'll tell me. That's the kind of respect that'll make her want you more IMO. Good luck!