Have you had a medical work-up and had your hormones checked? Maybe some hormone supplements would help. I've heard that a little testosterone for women can increase sex drive, since that hormone has a lot to do with that.

It is also possible it is psychological (I don't know, I'm just speculating because I don't know you.) How difficult was the surgery and having one of your ovaries taken out? Maybe you don't feel as sexy now or don't feel like he will find you sexy.

For women, sex drive is a very complex mixture of physical and psychological, so it's not as easy as just throwing a blue pill at it. First step is to make an appointment with your doctor (one that you can really open up with) and tell her (or him) your issues and how badly you want to resolve them.

You are really lucky to have such a supportive man. That will make the process easier as you start to pin-point what's wrong.

I wish you all the best.