Whats giong through this guys mind if you were the guy what would you think?

theres this guy i liked since last year in 10th grade he was in 11 i never met him but we always use to stare at each other in the hallways and gym he had a girl friend we had no mutual freinds no real way to meet i am now in 11th grade and i barley see him but he still stares at me his girl is no longer in the school i dont know what to do come on are were just gonna stare at each other for the rest of the year and if he likes me he should try to come up and talk to me even though it would be completly random in his part cause we never talked so i understand why that migth be akward and imbarising we barley see each other what should i do iam 99 percent sur he likes me i just cant come up to him radomly and say hey i too imbarist he just stares and sometimes smiles but turns bac really fast hes a really atractive guy and seems confident he could get any girl but i think hez too shy to come up to me and iam way to shy too what signs should i give him whats giong through this guys mind if you were the guy what would you think