I don't think it's wrong to want that level of intimacy at all. If I am not comfortable moving further with a guy (be it blow jobs, sex, whatever), then I break things off. After getting out of a very serious relationship earlier this year, I dated one guy for several weeks and naturally we had begun sleeping together.
After a few sessions in the sack, I began to feel we simply weren't compatible sexually. He was very gentle and took his time, but never made a move to go down on me or stimulate me except with his penis. I thought of bringing it up, but realized that I didn't care enough because I was not that attracted to him.