J.L.
Brittney,
We have all had these kinds of relationships at one point or another where we are so unsure of what the other truely thinks or feels. Are you two "romanticly" involved? You said you are always there for "him" is he always there for you? How is he with your son? If you are romanticly involved and is here always there for you, it may just be that like you said he works alot and doesn;t have the time needed to really figure all of this out... however if he is not there when you need him to be... stop being "that one" he feels he can fall back on. You said your not getting anywhere with him.. if that is how you feel then cut all ties and move on.
It seems you have a great relationship with your son.. focus on that and everything else will fall into place. I had my first child at the tender age of 17, so I know how it feels to have a little one and be in and out of relationships.. just wanting to find that "one" to settle down and complete your family.. however you can not rush things like this or it will only lead to regret. It took me a long time... to realize exactly what I needed and wanted in a life long partner.
I hope I helped alittle bit, if you need to talk or vent I am here my email is ____@____.com