Should I just stop chasing?

last september i was moved in maths to sit next to a boy that i didn't even know existed, let alone ever talked to. after a quick exchange of greetings we really did hit it off. i personally hate awkward pauses and find them painful so talk continuously about anything to avoid them, whilst he is quite as well as thoughtful, listening to me jibber jabber endlessly for an hour and not once complaining. at first i didn't think anything of him, but more and more we started engaging in actual conversation.we ended up making nicknames for each other and when ever we saw each other in the halls id scream out his, or he would scream out mine. nevertheless i still didn't think of him as anything more then a maths buddy in till just before christmas when he expressed his desire to get a chinchilla. it was the first time i noticed how blue his eyes were and the great depth of passion in which he spoke with. i know its sappy and sentimental but even his adorable freckles made my heart dance. my friends were always a bit weary of him, and never failed to tell me that they thought of him as two faced and far too eager to please. none of it mattered to me though, and i flirted helplessly with him maths lesson upon maths lesson to the point where it was so obvious that the teacher told me to stop flirting and finish my work. he must have known how i felt, he is not THAT thick, yet he never did anything to stop it-he even flirted back at times. around april there was a party where i got drunk. i hugged him and he held me very tight, and for a few moments more then he had to. i told him i needed to speak to him and tell him something special but he told me that i needed to sober up and took me to a foyer to calm down. i tried to tell him but he kept changing the subject. the maths lesson after that he teased me about being drunk for the first time but we both pretended that the foyer incident had never happened. i know this is very long winded but stay with me...my friends think that he is leading me on because he likes the attention but does not ever want anything out of it. i on the other hand refuse to think so, even though incidences like the party keep happening where he shows a bit of affection but then gets indifferent and pretends nothing ever happened. ive just finished my GCSE's and whilst im going to 6th form i think he is going away to collage so i will probably never see him again. should i just give up and stop wasting my time chasing him??