Oh, But I Do Lyrics

You think I don't love you, oh but I do
How can I show that I do?
You think I don't get blue, oh but I do
Though I get light-hearted, too
First I'm singing then I'm sighing
Then I'm flying high above
You think I don't know why, oh but I do
I know that it's you I love

[ Lyrics from: http://www.lyricenter.com/e78913-doris_day~oh_but_i_do_lyrics.html ]
First I'm singing then I'm sighing
Then I'm flying so high above
You think I don't know why, oh but I do
I know that it's you I love