If a guy likes you do they look at you a lot?

If he keeps looking at you that doesnt nesseceraly mean he likes you. I like a guy and he would always look at me we became really good friends. I was shure he liked me so one night i decided to tell him i liked him. It turn out he didnt like me ever. To this day were still friends but not as much. I still like him and when i told him i liked him he took it very nice. Maybe a guy could like you if he keeps looking at you but with me that didnt happen.