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Im confused...

So im an external student at a new sixth form and i dont know many people and yesterday a boy added me on fb (btw he must have remembered my name as i never spoke to him or his friends in class) so i messaged him like 'hey you're in my form right' and he replied back. at first i put no kisses but then he started to build them up so being polite i went to 'xxx' and then he put a heart but i didnt as i was just being nice. He told me that he finds me 'cute' and 'attractive' -i dont really know what to make of this as we've only been in a room once together and havent even spoken in real life.. he seems nice but i dont really know what he's like so i dont actually like him,,,what does this mean? Thanks