One day:

One day you will not love me
The way you loved me
Once apon a yesterday

One day you will love her
And I will crumble
As my heart with you will stay

One day you will look back
And our love will be
But a sweet, memory

And that one day is the day
That my love for you
Will bloom into misery

Extention:

Today:

You do not love me
The way you loved me
Once apon a yesterday

Today you love her
And I love him
But with you half my heart stays

Today you look back
As if our love
Were just a bitter memory

And today I know
That all my love boomed
Was a tale of misery