I'm obsessed with a boy, how am I over it?

Okay, it all started in May this year, when I was in a line at my school, the boy was in front of me, so someone asked who was in the line and he said he was going to me
 
SYes, this was enough for me to notice him, I started to find him handsome and more, so I created a fake profile on Instagram to follow him
 
EI went after a friend of his that I knew better, I found the profile of a boy who had the potential to be him, but there was no photo, a few days later I heard someone calling him, and he had the same name.
 
I followed him for 3 months, there were no photos, until he published a story, and I realized that the girl he said was his girlfriend had straight hair, unlike the girlfriend I knew.
 
I started to suspect that the profile wasn't his, so I started looking for other profiles, until last week I found an account that I was 90% sure was his.
 
I posted a story with a landscape and the song Popular by The Weekend, then Nothing Break Like a Heart by Miley Cyrus and finally Deja Vu by Beyoncé.
 
The next day he stopped following me, nothing much has changed since then, he just changed his profile picture to one where he covers half his face, but it still looks ugly.