我知道我不算什么在你心里，英文怎么讲

In your heart, I know, I mean little to you.

i know I dont mean anything in your heart.

I know I am nothing in your heart.

i know,you dont care me.

I know,I was nothing in your mind.
我知道,我没有在你心里.

这是直译.

但也可以意译为:我在你心里不算什么.

但从情感上来说,这样的表白不会有太大的积极效果.
如果用:I care about you deeply.
我很在乎你。

应该会好些,你自己选择吧!
如果我说的不合你心意,请见谅.
但还是祝你好运.Good Luck!

in your heart...there is no space for me