I have always opened the door for my wife --- it seems like just the right thing to do. About two years ago, I started leaning into the car and giving
her a nice kiss just after she sat down. She loves it and so do I.

I  do it regardless of who happens to be with us or where we are --- in other words, I do it every time. It's just a little thing, but then, big things (like the
relationship) depend on little things (like a kiss in the car).