She noticed first

Right.

She had a bad week and I had a fine one, and next month it will be the other way round. That is the whole mechanism.

Nobody has ever asked me how I was doing on a Wednesday before.

My buddy noticed something in my journal before I did and asked me a very gentle question about it.

Paired up. We text on Sunday nights, four or five lines each, and it has quietly become the most reliable thing in my week.

Dram-free. Odd.