While I agree with the last responder, I might not have put it in quite the terms that she did.
You love and are in love with this man but refuse to be honest with him about the sexual nature of your relationship? How can there be true trust and honesty with your "best friend" if you are willing to keep this HUGE secret between the two of you.
If you are still having sex with him but are not into it, he is going to feel like he is doing somethign wrong anyways. He will begin to wonder if you are going to find fulfillment elsewhere. It is a natural course for this type of problem to take.
I suggest you talk to him privately at first. Tell him what you told us. You are not out to hurt him, but you want to assure him that this is not HIS issue. Let him know up front what is going on. You may be surprised, he will likely be hurt, but he may want to work with you on this situation whether it is to find some way to make the sex more desirable for you or to find comfort in that it is not his fault, but that you do love him.
I will tell you from experience, if there is no sexual satisfaction between the two of you, there will come a day where it will become more problematic than it is now. You are likely young, and have not hit your sexual peak and he may have passed his, so for now it might survive. It WILL build up. You begin noticing how sexually attracted you are to other men or he will notice how sexually attracted he is to other women and because this need is not being met in the marriage bedroom (the act itself is not satisfying enough) one of you is going to want to do something about...I am not saying either of you will, but the yearning to do so will be there further straining the situation.
It may be that counseling is needed. And I will say that it is very possible that you are unable to let yourself be sexually attracted to your husband because of a deep seated desire to avoid the problems in your previous relationship.
I am not telling you that you are a bad person if this is the case, just suggesting you do some soul searching and see if this is remotely a possibility. I can see a desire not to repeat a past mistake making your husband less sexually desirable the more compatible and in love with him you become in other areas.
I highly suggest a counselor for you to see if you can work on the issue yourself...but make sure you explain what is going on to your husband so you don't cause problems by keeping secrets that he may misunderstand...If he loves you as much as you claim to love him he will stand by you while you work thorugh this and will be willing and ready to step up if/when it needs to become couples therapy...
Good Luck!!! ;-)