The beatles.

If I fell in love with you, would you promise to be true and help me understand ? 'cause I've been in love before, and I found that love was more than just holding hands . If I give my heart to you, I must be sure from the very start that you would love me more than her.
If I trust in you, oh please, don't run and hide . If I love you too, oh please, don't hurt my pride like her. 'cause I couldn't stand the pain, and I would be sad if our new love was in vain.
So I hope you see that I would love to love you. And that she will cry when she learns we are two. Because I couldn't stand the pain and I would be sad if our new love was in vain.
If I fell in love with you .