I agree with the other posters that you should tell him how you feel. Explain that in an emotional situation like this it's hard to see things clearly.

Also, please be wary in this respect: I in no way want to down your relationship. But, please do be careful. In a distance relationship it's very easy to misunderstand even when you are careful not to do so. This comes from both sides. Be as clear about what you feel and want out of the relationship as you can, and ask him to be too. It's good that you see each other in person, but a relationship that is primarily online can end up troubling.
My boyfriend's ex was dating him for 1.5 years, with a long distance relationship, they knew each other for 1-2 months of summer then he went to school. He felt like he knew her better than he did... even though that time went by the weren't together and problems that would come up in a relationship where they were together all the time didn't come up.

So what I'd say: 1. communicate as clearly and honestly as you can.
2. take more time than normal between steps in the relationship. Spend as much time as you can getting to know eachother. The more time you give yourself, the better off you are because you get to know him before stuff happens, and you have more time to figure out what you think bout everything, esp in this emotional situation.

loads of hugs
i hope all goes well