Right as he begins to drift off to sleep, kiss his forehead.
Be his sunrise. Make him coffee in the morning, even if you do not want any. If he holds your hand, grasp his in return, with all of the love in your body. Feel his pulse; his heart, pumping blood through his veins, through his hands, through his fingers, which wrap around yours with passion and life. Let it consume you.
This way, when all is said and done, he will remember your lips on his sleepy skin, and how he was protected at his most vulnerable...how his mind could rise peacefully with your help. He'll look at his open palm and wonder if yours is warm, and he can almost feel you intertwined with his lonely bones.
It may sting in the moment, but you've created a fire within him that will never burn out, and all you can do is hope that the next set of bones interlocking with his will be well worth his time. You've given him standards. You've given him what every soul deserves. You've given him love. And what ache isn't worth love?