Can't orgasm without a vibrator

An

I have never been able to orgasm with a partner without the use of a vibrator. Alone I can use my fingers easily, but my partners' fingers have never gotten me there since I like a lot of steady stimulation for a long period of time. I'm 31 years old and have gotten used to always using a vibrator during sex. Any ideas on how to help my partner make me orgasm without a vibrator involved?