This is the 652nd most frequent Chinese word.
永远
Forever; eternally.
In this sentence, '永远' is used to express a sense of perpetuity in the action of not forgetting.
我永远不会忘记你的帮助。
I will never forget your help.
Here, '永远' is used to evoke the timeless nature of emotional bonds.
友情是一种永远不会消逝的情感。
Friendship is an emotion that will never fade away.
In this context, '永远' is applied to describe the ceaseless quality of the happiness being longed for.