Is love a truth or just a temporaray state of mind..?

i like a girl ,, nd i dnt know she like me or not ..i tried to tak to to her for last 6 mnths ..she didnt replied ..bt she smiles every time saw me ,,,i did my best to impress her ..bt never talkd to her ..means i tried alot bt was nt able to express my feelings ...txd her lot ..snt her gifts.. one day she complained against me to clg authourity... i lik her ,,nd i thnk i love her ..shud i try more or give up...i m confused ..dnt want to make her uncomfortable...i want to try more ,,suggest me the right way..i can do any possible thing ..bt i m always confused she gonna lik or nt..need hlp urgent...!!!!!