Will he ever want to be with me again?

We broke up a month ago. Last night, he said that he misses me. He doesn't want to be in a commited relationship right now, nor doesn't want a girlfriend right now.& wants to be single for now. He said I can be his girl, but not be official. what does that mean??? and he wants to like talk, hang out, hookup but not have the title. someone please explain all of this to me :(