Sometimes you just have to speak frankly to your partner.
For many of us, sleep is the sweet balm that soothes and restores us after a long day of work and play. But for those for whom sleep is elusive or otherwise troubled, the issue is far more fraught. Most people, at some point in their lives, experience difficulty falling asleep.
Almost everyone goes through bouts of sleeplessness from time to time. It happens to the average person about once a year. That's the cost of being human and having the capacity to worry about the future and chew over the past.
Memory makes us. If we couldn't recall the who, what, where, and when of our everyday lives, we would never be able to manage. We mull over ideas in the present with our short-term (or working) memory, while we store past events and learned meanings in our long-term (episodic or semantic) memory.