OH MY GOSH!!! I sooooo agree with this! Be naughty, take a night off... from stress, life and other thoughts.
Go on a 'sexy date' night. Go to a darkly lit bar or restaurant, get dressed up, wear heels, laugh with each other, don't talk serious. Touch each other a lot during the night, the knee, arm, cheek... and smile a lot. This makes you feel sexy and want to get it on! At least this is what cosmo says! HAHAHA
I am always in and out of 'slumps', some weeks it could be 4x and sometimes it could only be 1x. It usually depends on how much I feel like I have to do. I am not on meds or birth control so it's not that. Its just there is so much going on all the time with work, school, remodeling, 2 kids(step), dogs, friends, family. I also found that we both like poker and play it on facebook and at one point we were sitting on the couch at night playing poker for 2 hours without looking at or talking to each other. This probably did not help our situation. We've both backed away from that and we both have started working out more!
We also don't do certain 'mood killer' things in front of each other. This might change when we move in together but for the most part we are comfortable with each other but not 'toooooo' comfortable. If you know what I mean!
Good Luck! You got a lot of good ideas and advice!