congrats! And in record time too
What i was trying to say below (before the computer ate most of my post (bad computer -no cookie), is that often before a constructive discussion can be had about sex, and the frequency thereof, you need to break out of the cycle of "lack of interest vs. nagging for it all the time".
It's a bit like an arguement - often in the end, someone has to say they're sorry (or maybe thats just me that's stuck with that )
One of the advantages of the date night (could really do with a [bleagh] smiley) is that it gives relief from returning to this cycle - esp. for the high-drive partner. They may not be getting the quantity of sex they want, but they know they will get some sex, thats its not going to be weeks/months. Freed from the pressure/nagging, the lower-drive partner can often start having more positive feelings about it, and may start to get the libido returning. And the regular sex keeps the level of intimacy up, which generally helps most relationships.
Some useful rules/guidelines around this (*)
Obviously, no pressure to have sex outside the date night
If you really dont want to on the night - dont. Set a rain-check - rather than just "maybe tomorrow". Perhaps look at non-penetrative options instead.
Intimate gestures (kissing/snoggin/bottom squeezing, etc) should be encouraged - but without the expectation that it leads to sex.
The low-drive partner can initiate sex outside the date night.
You may (possibly after you've got a routine established, and you're out of any negative cycles) want to go with the option that either partner has certain days that they can initiate sex, but that the other partner can refuse (without causing an argument)
(*) reading through this I thought "Rules? for sex? what have we come to?", but the idea here is that this is not necessarily a long-term way of living, but just a method to get you through a phase. And it is just a phase. (for most)