Is it normal that i still have feelings for this "person"

a while back i dated this guy , it wasent for a long time at all but yeah it was like a 2 week thing.but we had been talking for a LONG time before that. even while he dated other girls. we were good friends. i liked him since the FIRST day i met him. well when i dated him we were all good then we broke up. but still talked. & still messed around.. well in the summer we never actually got to the point of..having sex. but that doesn't mean there wasn't a time where we almost DID. noow he goes out with my "bestfriend" i still SORT of like him. i don't know wether its me just holding onto it bc i thinking "what if" of if maybe i still feel there's something there. or maybe there is something there & i don't realize it ? i see him at school everyday. when we hang out alone i still get that feeling i did when we first met..(excitement, rush, happiness, & wonder) buit its hard to feel this way knowing he dates my bestfriend now i don't know what to think about this.. i know its normal but whats your opinion on this ? ive had other boyfriends since then . & i just i want your HONEST opinion.