My boyfriend of 3 years has come out saying he doesn't know what he wants. I have moved out and we have broke up (which neiher of us wanted but he wanted space but still wanted to move out with me). I love him and want him to want to be with me. How do I give him the space he wants and make him miss me?

You can't force your boyfriend to miss you or want you back. Not being mean, but I suggest that if he does not want to be with you, move on and find a good guy that does. There are plenty more fish in the sea.

You leave him alone until he misses you enough to come after you.