About him recognizing you that might not mean anything. About him being able to open up more when talking to you that can mean something and he most likely dosen't open up like that to other people. I think that it will be a little hard dating a shy guy they are reserved and won't be able to say or do things he would like to do like asking you out for a date it will probably be a long run or you may need to "do the talking" that guys usually are the ones that do that, or maybe he can go beyond his shyness to try to get close to you. Each person acts in a diferent way, there is no telling exactly how it will work but the good thing about shy people that don't open much is that when they do open for someone they have strong feelings for that someone.