Most Helpful Guy
communicate with him how you feel, and that you'd like to build something cause you see him as a great potential boyfriend. ask him straight out how he feels about you, and if he is looking for a potential relationship or just a casual kinda hook up thing.
basically start the conversation. I wouldn't say "I want to be with you" but I'd say I really like you and have started thinking about us in terms of a more significant relationship0