Non-boyfriend: should I stay or go

I've been seeing the same guy for almost 6 months now. I have no clue where we are going. The first few months all he did was tell me he wanted to see how things go. Now it's no longer a topic. Even when I tell him I want him he doesn't say much. This is added to the fact that I am also sharing him with his ex sort of. Their son is special needs so their time and attention to him is extremely needed. She also stays at his place until the son goes to sleep (or atleast that's what I'm told) After all this time we still haven't went on an overnight trip. We havent met any family. Sometimes I think it's progress because he talks to me about his finances or family issues. But when we talk about the future he no longer says things like "we" . I only get your not getting rid of me that easy. Is this romance or friendship. Should I move on and find someone ready to commit or wait it out until he has his things in order and is ready.