Heartbroken

Holly • 15 yrs old just trying to get some answers! 😁
Okay so I started talking to this boy and he was my first everything! Well we had sex and all of a sudden he dropped me and went back to his ex. I try to forget him but everytimr I do I see him somewhere and it's hard cause I thought I loved him but he just used me... How do I forget about him ? Any tips