It's really difficult to forget someone that love too much . But u will getting better when u accept that this love impossible and when u get pain alot until u cannot patient anymore. You can love her ,no need to change love to be hate. But u should to love yourself more also. And u will see , when u are in the hard time who is still always with you in your life . This life we can meet someone but in one day have to leave from each other too. It's really hard time to let someone that u love go from your life. But when u do your best and everything cannot change , u will accept that and don't forget you are important person for someone .

Time will help you , hope you can pass the hard time .

Why do you feel you need to forget that person? Love is a great feeling, I think we should treasure it in our heart.

Thanks for all making instructive comments, it's very helpful and hopeful 

Time has a way of healing.
Love yourself first and find yourself first.
Sometimes too much love will kill you. 
And those dark memories gave you strenght to become a better version of yourself. 🤣