how does someone cope with this?

I've knows for a while that I have almost no chance of having kids. And knowing this hurt but not as bad as it does now. Me and my boyfriend want kids. We want tiny little mixed babies who Will have hair I'll have no idea what to do with. Cuddles in the middle of the night because they're scared. The terrible twos. The rebel teenage stage. We want all of it. He knows my situation, and I feel like he has more hope than I do when it comes to us having kids. He's so supportive. Even when I break down because of it, he right there telling me it will happen.