When you are up to it, do something unpredictable and outrageous for him. For instance, meet him at the door when he returns from work, hug him, and hand him a can of beer. That is if he drinks the stuff. Or if you are in an adventurous mood, order a bouquet of flowers for when he is at the office. He will remember these times. And if you think you can only do this once, this will still make a difference to him. Dream up things like this that you can do when you have the energy to do it. Then commit to something, anything at all.
I have been outrageous like this in the past. And I do think I will do it again, again, and again.
PS: A little wild, isn't it?