These are some of the lyrics:

You ask how much I love you must I pretend

You ask how much I need you like flowers need rain

Faith Hill and Tim McGraw Its called I Need You

Perhaps it is one of these two songs found on the following sites?

Song Lyrics Babyface - Honey    [Lyrics & Song Text Archive] (http://lyricstrue.net/bandsongtext/Babyface/Honey.html)

OLIVIA NEWTON-JOHN - THE TWELFTH OF NEVER Lyrics (http://www.seeklyrics.com/lyrics/Olivia-Newton-john/The-Twelfth-Of-Never.html)

Just a guess, because I couldn't find anything with the exact lyrics that you have posted.

The Twelfth of Never Lyrics
Artist(Band): Johnny Mathis

You ask how much I need you, must I explain?
I need you, oh my darling, like roses need rain.
You ask how long I'll love you; I'll tell you true:
Until the twelfth of never, I'll still be loving you.

Hold me close, never let me go.
Hold me close, melt my heart like April snow.

I'll love you till the bluebells forget to bloom;
I'll love you till the clover has lost its perfume.
I'll love you till the poets run out of rhyme,
Until the twelfth of never and that's a long, long time.

Hold me close, never let me go.
Hold me close, melt my heart like April snow.

I'll love you till the bluebells forget to bloom;
I'll love you till the clover has lost its perfume.
I'll love you till the poets run out of rhyme,
Until the twelfth of never and that's a long, long time.

Until the twelfth of never and that's a long, long time.