"用心良苦"的英文歌詞如下：
VERSE 1:
I've been living with a heavy heart
Trying to make you understand
All the pain and the agony that I've been through
But you never really took the time to listen
CHORUS:
So I've been trying to make you see
What my heart has been through
Trying to make you understand
Why I've been putting up with you
VERSE 2:
I've been holding back my feelings all this time
Trying to keep my emotions in line
But now I've had enough, I've had my fill
And I'm gonna let you know what's going on inside
CHORUS:
So I've been trying to make you see
What my heart has been through
Trying to make you understand
Why I've been putting up with you
BRIDGE:
I've been trying to make you understand
That my heart is hurting too
And I don't know what else to do
But to let you know that I'm feeling this too
CHORUS:
So I've been trying to make you see
What my heart has been through
Trying to make you understand
Why I've been putting up with you
註：以上歌詞是以英文形式呈現的“用心良苦”。歌詞中的表達方式較為直接，更易於理解和傳達情感。