Confused??

When I was in class 8th fell for a girl in class 6th . Couldn't express my feelings then . Later separated from class 9th , I moved to hostel later met her during class 10th breaks for a months everything was going good talking atleast for 3hrs a day in tuition then she this thing got leaked out in whole tuition by a friend of her . She also moved to another city . Couldn't contact her till class 12th then texted her again after class 12th summer breaks first thing she asked was if I was single or not but later told me that she had a boyfriend in studying in class 12th . I decided to tell her what I felt about her in past , told her every thing , agreed to be just friend the day before she blocked me we talked till 3am recently I wished her happ b'day. Not able to forget her what to do???