After insomnia? Any tips?

Can't complain about my life lately. My significant other comes over and stays the night quite a bit. The problem is that after we make love, he can fall asleep no problem. I end up entangled in his arms watching him breathe or snore. I think the is kinda like my jolt of caffeine. I'm usually wide away and stay that way for hours. Sometimes I fall asleep for small periods at a time but usually I get up watch TV or get a book and lie next to him and read. Anybody have any tips to help me fall asleep with him?? I want him to wake up and see me sleeping next to him for once.