我很后悔.我很想你.我不该离开你,自己一个人走.用英语怎么说.RT

It's been a pain that i leaved u alone,and really this pain let my heart bleeding.I miss u,and am missing u,dear.

机器翻的，你可以参考啦：I was sorry. I miss you so. I should not have left you, go.

I was sorry. I miss you so. I should not have left you, go.

I am so regret.I miss you very much.I shoudn't leave you and go away by myself.
希望能帮到你。

I regret to leave you and walk away alone. Now I am missing you.

I regret that I miss you so much. I shouldn't leave you and go away by myself.

I feel terribly sorry.And I miss you so much.I shouldn't have left you,and walked alone.

I regret to leave you, I miss you very much!
I shouldn't gone without you!