What do you do when your partners too tired?

So lately my boyfriends been too tired from work to have sex. We only see eachother 1-2 times a week. The last two weeks he's been too tired. And I say it's okay, I understand. But I'm actually pretty sad and disappointed. It's been two weeks and he used to not be able to keep his hands off me. Now I'm lucky if I get a kiss! Sure I can take care of myself at home but I miss the sex and the intimacy! How do you guys handle it when your partner is too tired to have sex?