Its a girl iv liked for 4 months now im 17 and shes 19 im a pisces shes a capricorn but we have a big problem?

In the start she was so beautiful and funny and independent she liked me first she said she liked my style she said it was unique we were talking everyday we liked eachother so much we sang together liked the same songs it was like everything we wanted in life was rght infront of us we also had alot in commen . So a month into us talking she asked to go out i said yes but in between that time i didnt picki up my phone at night that much so we basicly broke up 2 times even though we were perfect for each other we even had a important conversation about us being together and she said she would always have my back but now its like she dont but i do . After that we barely talked on the phone like we was mad at each other then she apologized and i asked to go out and do it right this time and she said yes then its like we were coming back to normal but i guess i was wrong. Now we usually just talk on the internet with her barly replying back but she calls me sometimes and when we do talk its not for that long i still love her and all the things she ust to tell me i believe she still has love in her heart for me too and i told her that shes a angle to me but what should i do i want to be with her for alot of reasons but what can i do to get her back or make her rethink about us she ust to think i was playing her but im not shes treating me like i broke her heart so now i just dont know what to do i need help . Today i told her shes soo beautiful to me i wonder if she believed. I just want a real chance