"Will your heart never change?" Is that a:
Hyperbole?
Simile?
Idiom?
Metaphor? ​

https://www.brainpickings.org/2016/02/19/john-keats-love-letter-fanny-brawne/

Read from this link as the fragment with the phrase is right below the photo in the article

it's more of a metaphor if I may voice my thoughts  

Hope this helps

I remember it being idoilm

well it is hard to say but everyone learns at there own pace  

i learn slow so it would take me like awhile

i hope i was so kinda

and if i was you in would goggle it and watch videos or go to your friends and ask them or maybe even your teacher for extra

this question is not school related. refrain from asking non school or academic related questions in the future.