Ok...Thanks for posting back.
First of all, I commend you for not wanting to cheat. A few months back there was a poster here on CZ whose husband didn't want to have sex anymore and she used that as a justification to cheat.
The way I see it, you do have some options:
1) Leave the relationship but depending on the details of your situation, that could well be a rather draconian solution.
Instead, if your relationship is a good one despite the mismatch of sex drives, then there is much to consider. If you have kids, is he a good father? Is he a good provider? Is he otherwise demonstrative in showing you affection? Do you love each other? Do you share common interests and values?
The thing to remember about sex --- even if you both were sexually compatible, things can change. Sometimes men develop health issues and can no longer perform. These health issues may make him unable to take the little blue pill.
If all the other above mentioned components are in place, then a good marriage/relationship can survive without sex.
2) Use the vibrator as the other poster suggested. However, interestingly enough, I recently read an article that said once a woman uses a vibrator, she can find it hard to go back to conventional sex. This is because the vibrator produces a much more intense orgasm.
Only you can decide which route is the right one for you. I wish you all the best!