我心永恆的英文歌詞如下：
Thou art a part of me forever,
And I am a part of thee,
So when I look up at the sky at night,
It is my spirit that will sing,
My spirit that will see thee,
And so I say, love, forever and a day.
Verse 2:
Oh, I will love you more than before,
Oh, I will sing you a new song,
Oh, my heart will be true as a rose,
And forever and a day,
I will love you and keep you in my heart.
Chorus:
Oh, my love, my one and only,
Oh, my heart belongs to you,
Oh, my love will never change,
Oh, forever and a day.
Bridge:
When I am old and gray and can no longer see,
When my spirit wanders through the endless sky at night,
Oh, my spirit will remember thee,
And I will hear your voice in the breeze.
Outro:
Oh, my love, my one and only,
Oh, forever and a day.