Taking out the trash.
Cooking a(n) (elaborate) meal.
Doing all the laundry.
Remembering important dates and facts.
Laughing at their jokes.
Making them a cup of coffee.
Thinking about them.
Giving them the “better” piece of food.
Paying for their meal.
Making time for them.
Celebrating special moments.
Allowing them to have their own space.
Being there during difficult times.
Including them in your future plans.
Celebrating their successes.