I've been with my partner (cis-male, I'm cis-female) for almost a year and we have a wonderful relationship and active sex life... and I still can't get over my nerves about oral sex to actually let him go down on me, though he is eager to do so. I love going down on him and so I can imagine that he would earnestly look forward to returning the favor, but I just can't imagine that it won't be a turn off for him. One of my concerns is that I've NEVER had an orgasm. Oral sex is kind of the last frontier. Both PIV sex and being touched by my partner can both feel great, but intense approaching-an-orgasm feelings come and go pretty quickly, dissipating after a few seconds. If oral sex doesn't do it for me either, I am a bit worried that my partner (and I!) will be disappointed. How can I work on my own feelings toward this so that I can relax? I've been sexually active for five years (I'm 23) and I'm starting to feel like there's something wrong with my body. No one is making me feel this way - every sexual partner I've had has been understanding and not taken my inability to orgasm as some kind of deficiency or personal insult, so this is coming from me.
I don't feel insecure or unsure about sex and I have a healthy body image, except for these few square centimeters in this one very particular situation! :-/
EDITED TO ADD: Aiming at orgasm isn't at all the object of sex for me. My partner and I have a great sex life, I think, and I am always happy to be intimate with him. I don't think about reaching orgasm, just enjoying the experience.