You Tend to Jump Head First into the Shallow End

My red flags went up when you said that he's afraid to get close. That problem isn't going to go away by itself. You are heading for dangerous waters.

True, it's a bit early to be discussing your long-term future together, however if this guy is afraid to get close, time isn't going to heal that. If you allow the relationship to progress and your feelings to deepen, you are likely going to find yourself broken hearted. You are going to need to protect yourself and the sooner the better. The best way to do this is to tell him what you are afraid of. . . that you are looking for a long-term relationship and you are concerned that his fear of getting close is going to be an impediment.

Then I would be asking him if he has a plan for working on his fear. You will want to see that the guy is taking responsibility for his issues and working on them. If you get the sense that he would rather stick his head in the sand and not deal with his problems, then your sense of danger will be confirmed, which means that you will need to look before you leap head first into this relationship.