A friend told me a little tradition she and her husband have. At random times, one of them will say two words.

"Remember when?"

The memory may be recent, or from a while back.

"Remember when I thought we were going on a walk to a waterfall and you asked me to marry you?"

or

"Remember when I couldn't find the remote this morning and you dug it out of the couch cushions?"

It's a sweet way to blend both an appreciation, and a fond recollection in one verbal dessert. Plus there are no calories. 

The thing is, having shared history is a secret power. You have been through the same heart throbs, and heart aches. Both have their way of entwining you. I can hardly believe that John and I have survived the childbirths, and cross continental moves, and ER trips that have spotted our past. Then there were the weddings, and birthdays, and vacations at the beach. Simply knowing he was there too is endearing in a way I cannot find words for. Except maybe two small ones.