Here are my thoughts on it: Before, the 'passion' of our situation got me and kept me revved. The not getting along and so forth seemed to create a romance novel type friction between us.
Now with that gone, we are having to move towards something a little more boring but still fulfilling. I too started questioning whether my HD was a facade but it has come back, so I'm thinking not.
Here is the difference: My drive is still higher than his, but not so outta control that I'm willing to fight about it and bring it up endlessly, etc. If we do, great. If we don't, I'll survive quite nicely. I find that I am becoming much more of a Typical Chick in that the more sex we have the more I want it. I still have a baseline level of horniness that is probably higher than a lot of women's (that is, I'd never turn it down) but on the days I'm not having it, I'm perfectly a-okay and *that* is a huge change. I find that I am able to get in sync with H's drive much better due to this change, as well. If it's a week where he can't get enough, I'm loving it. If it's a week where he's "tired" I'm alright with that too. The only time that I seem to feel myself falling back into old habits was a couple weeks ago when it had been over 2 weeks and I was gettin antsy.
So what changed? I honestly don't know. Boundaries? Attitude adjustment? Hormonal shift? No clue.
I do know that it just kindof evolved slowly into what it is today.
Does this sound like what you are going through? I'd be interested to know if this is part of the normal HDW resolution..the end of the story, if you will.