YOU SAID:

I think you have no idea of how much this is hurting me

INTO JAPANESE

これがどれだけ私を傷つけているのかあなたにはわからないと思います

BACK INTO ENGLISH

I don't think you know how much this hurt me

INTO JAPANESE

これがどれほど私を傷つけたかあなたは知らないと思います

BACK INTO ENGLISH

I don't think you know how much this hurt me