Can you like someone that you dont know personally?

It's up to you. At the end of the day, it seems like you two really like the thought of being with eachother, whether you like eachother entirely is a different issue; you have only liked him for two weeks remember! But obviously you can like someone you don't know personally, different people like people for different reasons; over the internet or in person, after knowing them for a week or after a year. The exact same thing that's happening to you happened to my friend and she's been with the guy for a month now To be honest I think you should talk to him in person and then you can both decide how much you really like eachother and whether you would be a good couple :)