I Need To Know : Classic Movie Musical

Classic Movie Musical

I am looking for an old black and white musical, in which in this one scene this couple sings to each other on a field or hill with mountains in the background. They seem to be yodelling, but not really. I don't know the exact lyrics to the song they are singing, but I think it goes something like this…

Female: I'm in love youuuuuuuuuuu

Male: And my heart is truuuuuuuuuuue

I'm not sure if the movie was made in the 1920s, 1930s, or 1940s. I'd appreciate your help. So that's all I can say.

Re: Classic Movie Musical

Rose-Marie (1936)?

Indian Love Call
(1924) (uncredited)
Music by Rudolf Friml
Lyrics by Oscar Hammerstein II
Played during the opening credits
Sung by Nelson Eddy and Jeanette MacDonald
Reprised by them at the end

Update: Could it have been a color movie from the '50s?
This scene from Rose Marie (1954) matches your description.