how can I know if this guy likes me?

theres a guy I really like. hes funny cute athletic nice sweet caring and has a great personality. my close guy friend says if you ask him if he likes a girl and he really does, he denies it. my friend told him I liked him and wehn I was texting my other guy friend bob (not his real name lol) he was also texting billy (the guy I like and thats not his real name either) billy asked bob to ask me who I liked and bob told him I did. bob asked if he liked me back or something but billy said he likes me as a friend but at school he always looks at me the most when he talks with a group of people and out of no where he stands next to me. hes kinda nicer to me than other girls. I dont know what to do because it seems like he likes me but says he doesnt. if he did like me , why wouldnt he want to get wit me? please help