High Sex Drive? Low Sex Drive?

It seems like ever since we moved together, my SO want sex less. It went from 3x per week (when we lived apart) to maybe once a week (now). Also, we take less time for foreplay and are less adventurous. We are both extremely busy and work different schedules, which could be contributing. I don't know if I just have a high sex drive, or if I'm not doing something right, or if I should be worried about our relationship, or is this normal?