How to make her love me?

wen i wa in the 7th grade there was a new kid in my class and it was a girl she was so cute i fell in loved with her from the first sight.After 6 months my bro had a surgery but unfortunately he past out, i was so desperate,but wen i came back to school and sow her beautiful eyes i felt like i'm flying with out even talking to her after 1 week i told her that i love her and i want her to be my gf she said yes after 2 days of thinking but after 1 week she broke up with me and i didn't know why only after 3 years of me loving her and se ignores me she said yes cuz she had Petey on me cuz my bro died andi realy do love her how can i make her love me