I don't know as there is really much of anything I can offer with regard to this. But I noticed no one else had yet replied to your post. So I thought I would.
Personally I don't think the situation you describe is all that unusual. I suspect the chances of two people getting together who are equally matched in terms of their sex drive is probably not that great. It probably happens. But I would be inclined to think it is the exception rather than the rule.
The key to this, to my mind, is simply communication. You & your partner need to be talking about what each of you do & don't want in terms of sexual relations (as well as most everything else in your relationship.) If you feel you & your partner can't engage in that kind of open sharing then, it seems to me, that is really the crux of your dilemma & is probably the first thing you need to work on. If you can resolve that problem, then your concerns related to your mismatched sex drives may well take care of themselves. At least these are my thoughts with regard to your post.
Here are links to 3 articles, from PC's archives, on the subject of communications within relationships
9 Steps to Better Communication Today
Communication Pitfalls & Pointers for Couples; Psych Central
3 Keys to a Strong Relationship